diff --git a/Vocaluxe/Base/CConfig.cs b/Vocaluxe/Base/CConfig.cs
index 33f51fac..60731994 100644
--- a/Vocaluxe/Base/CConfig.cs
+++ b/Vocaluxe/Base/CConfig.cs
@@ -291,7 +291,6 @@ namespace Vocaluxe.Base
             #endregion Video
 
             #region Record
-            MicConfig = new SMicConfig[CSettings.MaxNumPlayer];
             for (int p = 1; p <= CSettings.MaxNumPlayer; p++)
             {
                 MicConfig[p - 1] = new SMicConfig(0);
@@ -627,7 +626,7 @@ namespace Vocaluxe.Base
         /// <returns></returns>
         public static bool IsMicConfig()
         {
-            ReadOnlyCollection<CRecordDevice> devices = CRecord.RecordGetDevices();
+            ReadOnlyCollection<CRecordDevice> devices = CRecord.GetDevices();
             if (devices == null)
                 return false;
 
@@ -641,7 +640,7 @@ namespace Vocaluxe.Base
         /// <returns></returns>
         public static bool IsMicConfig(int player)
         {
-            ReadOnlyCollection<CRecordDevice> devices = CRecord.RecordGetDevices();
+            ReadOnlyCollection<CRecordDevice> devices = CRecord.GetDevices();
             if (devices == null)
                 return false;
 
@@ -668,7 +667,7 @@ namespace Vocaluxe.Base
         {
             //Look for (usb-)mic
             //SRecordDevice[] Devices = new SRecordDevice[CRecord.RecordGetDevices().Length];
-            ReadOnlyCollection<CRecordDevice> devices = CRecord.RecordGetDevices();
+            ReadOnlyCollection<CRecordDevice> devices = CRecord.GetDevices();
             if (devices == null)
                 return false;
 
diff --git a/Vocaluxe/Base/CGame.cs b/Vocaluxe/Base/CGame.cs
index 27c77ecb..46df686f 100644
--- a/Vocaluxe/Base/CGame.cs
+++ b/Vocaluxe/Base/CGame.cs
@@ -271,14 +271,14 @@ namespace Vocaluxe.Base
                     if (line == lines.Length - 1 && beat == lines[line].LastNoteBeat)
                         Players[p].SongFinished = true;
 
-                    if (notes[note].PointsForBeat > 0 && (CRecord.RecordToneValid(p)
+                    if (notes[note].PointsForBeat > 0 && (CRecord.ToneValid(p)
 #if DEBUG_HIT
                         || true
 #endif
                                                          ))
                     {
                         int tone = notes[note].Tone;
-                        int tonePlayer = CRecord.RecordGetTone(p);
+                        int tonePlayer = CRecord.GetTone(p);
 
                         while (tonePlayer - tone > 6)
                             tonePlayer -= 12;
diff --git a/Vocaluxe/Base/CGraphics.cs b/Vocaluxe/Base/CGraphics.cs
index d5e50d25..9befefb8 100644
--- a/Vocaluxe/Base/CGraphics.cs
+++ b/Vocaluxe/Base/CGraphics.cs
@@ -616,10 +616,10 @@ namespace Vocaluxe.Base
 
                 if (CConfig.DebugLevel >= EDebugLevel.TR_CONFIG_LEVEL2)
                 {
-                    debugOutput.Add(CRecord.RecordGetToneAbs(0).ToString(CLanguage.Translate("TR_DEBUG_TONE_ABS") + " P1: 00"));
-                    debugOutput.Add(CRecord.RecordGetMaxVolume(0).ToString(CLanguage.Translate("TR_DEBUG_MAX_VOLUME") + " P1: 0.000"));
-                    debugOutput.Add(CRecord.RecordGetToneAbs(1).ToString(CLanguage.Translate("TR_DEBUG_TONE_ABS") + " P2: 00"));
-                    debugOutput.Add(CRecord.RecordGetMaxVolume(1).ToString(CLanguage.Translate("TR_DEBUG_MAX_VOLUME") + " P2: 0.000"));
+                    debugOutput.Add(CRecord.GetToneAbs(0).ToString(CLanguage.Translate("TR_DEBUG_TONE_ABS") + " P1: 00"));
+                    debugOutput.Add(CRecord.GetMaxVolume(0).ToString(CLanguage.Translate("TR_DEBUG_MAX_VOLUME") + " P1: 0.000"));
+                    debugOutput.Add(CRecord.GetToneAbs(1).ToString(CLanguage.Translate("TR_DEBUG_TONE_ABS") + " P2: 00"));
+                    debugOutput.Add(CRecord.GetMaxVolume(1).ToString(CLanguage.Translate("TR_DEBUG_MAX_VOLUME") + " P2: 0.000"));
 
                     if (CConfig.DebugLevel >= EDebugLevel.TR_CONFIG_LEVEL3)
                     {
diff --git a/Vocaluxe/Base/CMain.cs b/Vocaluxe/Base/CMain.cs
index 70798269..c0c44c4b 100644
--- a/Vocaluxe/Base/CMain.cs
+++ b/Vocaluxe/Base/CMain.cs
@@ -626,7 +626,7 @@ namespace Vocaluxe.Base
     {
         public int GetToneAbs(int playerNr)
         {
-            return CRecord.RecordGetToneAbs(playerNr);
+            return CRecord.GetToneAbs(playerNr);
         }
     }
 
diff --git a/Vocaluxe/Base/CRecord.cs b/Vocaluxe/Base/CRecord.cs
index 5493fd58..cbebccea 100644
--- a/Vocaluxe/Base/CRecord.cs
+++ b/Vocaluxe/Base/CRecord.cs
@@ -10,7 +10,7 @@ namespace Vocaluxe.Base
     {
         private static IRecord _Record;
 
-        public static void RecordInit()
+        public static void Init()
         {
             switch (CConfig.RecordLib)
             {
@@ -27,17 +27,17 @@ namespace Vocaluxe.Base
             }
         }
 
-        public static void RecordCloseAll()
+        public static void Close()
         {
-            _Record.CloseAll();
+            _Record.Close();
         }
 
-        public static bool RecordStart()
+        public static bool Start()
         {
             return _Record.Start();
         }
 
-        public static bool RecordStop()
+        public static bool Stop()
         {
             return _Record.Stop();
         }
@@ -47,34 +47,34 @@ namespace Vocaluxe.Base
             _Record.AnalyzeBuffer(player);
         }
 
-        public static int RecordGetToneAbs(int player)
+        public static int GetToneAbs(int player)
         {
             return _Record.GetToneAbs(player);
         }
 
-        public static int RecordGetTone(int player)
+        public static int GetTone(int player)
         {
             return _Record.GetTone(player);
         }
 
-        public static void RecordSetTone(int player, int tone)
+        public static void SetTone(int player, int tone)
         {
             _Record.SetTone(player, tone);
         }
 
-        public static bool RecordToneValid(int player)
+        public static bool ToneValid(int player)
         {
             return _Record.ToneValid(player);
         }
 
-        public static float RecordGetMaxVolume(int player)
+        public static float GetMaxVolume(int player)
         {
             return _Record.GetMaxVolume(player);
         }
 
         public static int NumHalfTones(int player)
         {
-            return _Record.NumHalfTones(player);
+            return _Record.NumHalfTones();
         }
 
         public static float[] ToneWeigth(int player)
@@ -82,7 +82,7 @@ namespace Vocaluxe.Base
             return _Record.ToneWeigth(player);
         }
 
-        public static ReadOnlyCollection<CRecordDevice> RecordGetDevices()
+        public static ReadOnlyCollection<CRecordDevice> GetDevices()
         {
             ReadOnlyCollection<CRecordDevice> devices = _Record.RecordDevices();
 
diff --git a/Vocaluxe/COSFunctions.cs b/Vocaluxe/COSFunctions.cs
index c72b6c46..472956c6 100644
--- a/Vocaluxe/COSFunctions.cs
+++ b/Vocaluxe/COSFunctions.cs
@@ -1,8 +1,5 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Runtime.InteropServices;
-using System.Text;
 
 namespace Vocaluxe
 {
diff --git a/Vocaluxe/Lib/Sound/Record/CBuffer.cs b/Vocaluxe/Lib/Sound/Record/CBuffer.cs
index cbf72706..3ead34bc 100644
--- a/Vocaluxe/Lib/Sound/Record/CBuffer.cs
+++ b/Vocaluxe/Lib/Sound/Record/CBuffer.cs
@@ -5,8 +5,9 @@ namespace Vocaluxe.Lib.Sound.Record
 {
     class CBuffer : IDisposable
     {
-        private const double _BaseToneFreq = 65.4064;
-        public const int NumHalfTones = 17;
+        //Half tones: C C♯ D Eb E F F♯ G G♯ A Bb B
+        private const double _BaseToneFreq = 65.4064; // lowest (half-)tone to analyze (C2 = 65.4064 Hz)
+        public const int NumHalfTones = 17; //Number of halftone to analyze C2-E3 (TODO: use more/full octaves?)
 
         private const int _AnalysisBufLen = 4096;
         private const int _AnalysisByteBufLen = _AnalysisBufLen * 2;
diff --git a/Vocaluxe/Lib/Sound/Record/CDelayTest.cs b/Vocaluxe/Lib/Sound/Record/CDelayTest.cs
index 711484d3..a9974c40 100644
--- a/Vocaluxe/Lib/Sound/Record/CDelayTest.cs
+++ b/Vocaluxe/Lib/Sound/Record/CDelayTest.cs
@@ -82,7 +82,7 @@ namespace Vocaluxe.Lib.Sound.Record
                 {
                     if (_DelaysChannel[i].Channel < 0 || _DelaysChannel[i].Finished)
                         continue;
-                    if (CRecord.RecordGetMaxVolume(_DelaysChannel[i].Channel) > 0.1f && CRecord.RecordGetTone(_DelaysChannel[i].Channel) == 9)
+                    if (CRecord.GetMaxVolume(_DelaysChannel[i].Channel) > 0.1f && CRecord.GetTone(_DelaysChannel[i].Channel) == 9)
                     {
                         Delays[i] = (int)_Timer.ElapsedMilliseconds;
                         _DelaysChannel[i].Finished = true;
diff --git a/Vocaluxe/Lib/Sound/Record/DirectSound/CDirectSoundRecord.cs b/Vocaluxe/Lib/Sound/Record/DirectSound/CDirectSoundRecord.cs
index 5707db98..84e54518 100644
--- a/Vocaluxe/Lib/Sound/Record/DirectSound/CDirectSoundRecord.cs
+++ b/Vocaluxe/Lib/Sound/Record/DirectSound/CDirectSoundRecord.cs
@@ -66,7 +66,7 @@ namespace Vocaluxe.Lib.Sound.Record.DirectSound
             return true;
         }
 
-        public void CloseAll()
+        public void Close()
         {
             if (_Initialized)
             {
@@ -173,7 +173,7 @@ namespace Vocaluxe.Lib.Sound.Record.DirectSound
             return _Devices.AsReadOnly();
         }
 
-        public int NumHalfTones(int player)
+        public int NumHalfTones()
         {
             if (!_Initialized)
                 return 0;
diff --git a/Vocaluxe/Lib/Sound/Record/IRecord.cs b/Vocaluxe/Lib/Sound/Record/IRecord.cs
index 6812e7c0..04899008 100644
--- a/Vocaluxe/Lib/Sound/Record/IRecord.cs
+++ b/Vocaluxe/Lib/Sound/Record/IRecord.cs
@@ -61,21 +61,87 @@ namespace Vocaluxe.Lib.Sound.Record
 
     interface IRecord
     {
+        /// <summary>
+        /// Initializes recording
+        /// </summary>
+        /// <returns>True on success</returns>
         bool Init();
-        void CloseAll();
 
+        /// <summary>
+        /// Closes recording. You must not use it before calling Init again
+        /// </summary>
+        void Close();
+
+        /// <summary>
+        /// Starts recording on all enabled devices (PlayerChannelX set)
+        /// </summary>
+        /// <returns>True on success, false on error or not initialized</returns>
         bool Start();
+
+        /// <summary>
+        /// Stops recording on all devices
+        /// </summary>
+        /// <returns>True on success, false on error or not initialized</returns>
         bool Stop();
+
+        /// <summary>
+        /// Analyzes the buffer for the given player
+        /// </summary>
+        /// <param name="player"></param>
         void AnalyzeBuffer(int player);
 
+        /// <summary>
+        /// Get the current raw tone value for a player
+        /// </summary>
+        /// <param name="player">0-based player index</param>
+        /// <returns>Tone between 0 and NumHalftones-1</returns>
         int GetToneAbs(int player);
+
+        /// <summary>
+        /// Get the current tone value for a player
+        /// </summary>
+        /// <param name="player">0-based player index</param>
+        /// <returns>Tone between 0 and 11 (one octave)</returns>
         int GetTone(int player);
+
+        /// <summary>
+        /// DEBUG ONLY: Sets a tone for a player
+        /// </summary>
+        /// <param name="player">0-based player index</param>
+        /// <param name="tone">Raw tone value between 0 and NumHalfTones-1</param>
         void SetTone(int player, int tone);
+
+        /// <summary>
+        /// Get the current maximum input volume (normalized) for a player
+        /// </summary>
+        /// <param name="player">0-based player index</param>
+        /// <returns>Maximum volume between 0 and 1</returns>
         float GetMaxVolume(int player);
+
+        /// <summary>
+        /// Returns whether the current tone is valid. That includes, if maximum volume is higher than the threshold
+        /// </summary>
+        /// <param name="player">0-based player index</param>
+        /// <returns>True if tone is detected and volume higher than threshold</returns>
         bool ToneValid(int player);
-        int NumHalfTones(int player);
+
+        /// <summary>
+        /// Returns the number of half tones used for the raw tone detection
+        /// </summary>
+        /// <returns>number of half tones used for the raw tone detection</returns>
+        int NumHalfTones();
+
+        /// <summary>
+        /// Returns the tone weights for a player as an array of normalized values for each halftone
+        /// </summary>
+        /// <param name="player">0-based player index</param>
+        /// <returns>Array of values (0-1) with one entry per halftone</returns>
         float[] ToneWeigth(int player);
 
+        /// <summary>
+        /// Readonly list of all detected record devices. Modifying the devices should not be done when record is running.
+        /// </summary>
+        /// <returns>Readonly list of all detected record devices</returns>
         ReadOnlyCollection<CRecordDevice> RecordDevices();
     }
 }
\ No newline at end of file
diff --git a/Vocaluxe/Lib/Sound/Record/PortAudio/CPortAudioRecord.cs b/Vocaluxe/Lib/Sound/Record/PortAudio/CPortAudioRecord.cs
index 156b0938..8c9e8dec 100644
--- a/Vocaluxe/Lib/Sound/Record/PortAudio/CPortAudioRecord.cs
+++ b/Vocaluxe/Lib/Sound/Record/PortAudio/CPortAudioRecord.cs
@@ -56,7 +56,7 @@ namespace Vocaluxe.Lib.Sound.Record.PortAudio
             try
             {
                 if (_Initialized)
-                    CloseAll();
+                    Close();
 
                 if (_ErrorCheck("Initialize", PortAudioSharp.PortAudio.Pa_Initialize()))
                     return false;
@@ -164,7 +164,7 @@ namespace Vocaluxe.Lib.Sound.Record.PortAudio
         /// <summary>
         ///     Stop all voice capturing streams and terminate PortAudio
         /// </summary>
-        public void CloseAll()
+        public void Close()
         {
             Stop();
 
@@ -229,7 +229,7 @@ namespace Vocaluxe.Lib.Sound.Record.PortAudio
             return _Buffer[player].ToneValid;
         }
 
-        public int NumHalfTones(int player)
+        public int NumHalfTones()
         {
             if (!_Initialized)
                 return 0;
diff --git a/Vocaluxe/Program.cs b/Vocaluxe/Program.cs
index 526cf20a..6676cd78 100644
--- a/Vocaluxe/Program.cs
+++ b/Vocaluxe/Program.cs
@@ -126,7 +126,7 @@ namespace Vocaluxe
 
                 // Init Record
                 CLog.StartBenchmark(0, "Init Record");
-                CRecord.RecordInit();
+                CRecord.Init();
                 CLog.StopBenchmark(0, "Init Record");
 
                 Application.DoEvents();
@@ -243,7 +243,7 @@ namespace Vocaluxe
             {
                 CVocaluxeServer.Close();
                 CController.Close();
-                CRecord.RecordCloseAll();
+                CRecord.Close();
                 CSound.CloseAllStreams();
                 CVideo.CloseAll();
                 CDraw.Unload();
diff --git a/Vocaluxe/Screens/CScreenNames.cs b/Vocaluxe/Screens/CScreenNames.cs
index dc5165ce..f3789e5c 100644
--- a/Vocaluxe/Screens/CScreenNames.cs
+++ b/Vocaluxe/Screens/CScreenNames.cs
@@ -555,7 +555,7 @@ namespace Vocaluxe.Screens
         public override void OnShow()
         {
             base.OnShow();
-            CRecord.RecordStart();
+            CRecord.Start();
 
             _NameSelections[_NameSelection].Init();
             _LoadProfiles();
@@ -565,7 +565,7 @@ namespace Vocaluxe.Screens
         public override void OnClose()
         {
             base.OnClose();
-            CRecord.RecordStop();
+            CRecord.Stop();
         }
 
         public override bool Draw()
diff --git a/Vocaluxe/Screens/CScreenOptionsRecord.cs b/Vocaluxe/Screens/CScreenOptionsRecord.cs
index 7eead339..1a7941c8 100644
--- a/Vocaluxe/Screens/CScreenOptionsRecord.cs
+++ b/Vocaluxe/Screens/CScreenOptionsRecord.cs
@@ -228,7 +228,7 @@ namespace Vocaluxe.Screens
                 int player = _SelectSlides[_SelectSlideRecordChannel1].Selection;
                 if (player > 0)
                 {
-                    _ChannelEnergy[0] = CRecord.RecordGetMaxVolume(player - 1);
+                    _ChannelEnergy[0] = CRecord.GetMaxVolume(player - 1);
                     _Equalizers[_EqualizerChannel1].Update(CRecord.ToneWeigth(player - 1));
                 }
                 else
@@ -238,7 +238,7 @@ namespace Vocaluxe.Screens
                 player = _SelectSlides[_SelectSlideRecordChannel2].Selection;
                 if (player > 0)
                 {
-                    _ChannelEnergy[1] = CRecord.RecordGetMaxVolume(player - 1);
+                    _ChannelEnergy[1] = CRecord.GetMaxVolume(player - 1);
                     _Equalizers[_EqualizerChannel2].Update(CRecord.ToneWeigth(player - 1));
                 }
                 else
@@ -266,7 +266,7 @@ namespace Vocaluxe.Screens
 
             _DeviceNr = -1;
 
-            _Devices = CRecord.RecordGetDevices();
+            _Devices = CRecord.GetDevices();
             if (_Devices != null)
             {
                 _DeviceNr = 0;
@@ -337,7 +337,7 @@ namespace Vocaluxe.Screens
         public override void OnClose()
         {
             base.OnClose();
-            CRecord.RecordStop();
+            CRecord.Stop();
 
             _DelayTest.Reset();
             CBackgroundMusic.Disabled = false;
@@ -363,7 +363,7 @@ namespace Vocaluxe.Screens
             if (_Devices == null)
                 return;
 
-            CRecord.RecordStop();
+            CRecord.Stop();
             _SetMicConfig();
 
             if (_CheckMicConfig())
@@ -389,7 +389,7 @@ namespace Vocaluxe.Screens
                 }
                 CConfig.SaveConfig();
             }
-            CRecord.RecordStart();
+            CRecord.Start();
         }
 
         private void _SetPlayerColors()
diff --git a/Vocaluxe/Screens/CScreenSing.cs b/Vocaluxe/Screens/CScreenSing.cs
index 20fff366..9b58c99a 100644
--- a/Vocaluxe/Screens/CScreenSing.cs
+++ b/Vocaluxe/Screens/CScreenSing.cs
@@ -556,7 +556,7 @@ namespace Vocaluxe.Screens
         {
             if (_CurrentStream > -1)
                 CSound.FadeAndClose(_CurrentStream, 0f, 0.5f);
-            CRecord.RecordStop();
+            CRecord.Stop();
             if (_CurrentVideo != -1)
             {
                 CVideo.Close(_CurrentVideo);
@@ -738,7 +738,7 @@ namespace Vocaluxe.Screens
         {
             _PrepareTimeLine();
             CSound.Play(_CurrentStream);
-            CRecord.RecordStart();
+            CRecord.Start();
             if (_Webcam)
                 CWebcam.Start();
         }