https://code.google.com/p/high-performance-audio/
http://www.midi.org/aboutmidi/android.php
https://play.google.com/store/apps/details?id=com.levien.audiobuffersize
http://audiobuffersize.appspot.com/

http://www.all-guitar-chords.com

Effect of frequencies on moods and organs:
http://www.harmonicresearch.org/frequencies.html

Articles on color/frequency translation

http://lyranara.me/2013/07/13/a-new-care-health-system-based-on-cosmic-frequencies-super-tunes/

http://www.g-gglobal.com/bionrg/quantum-energy-devices/color-supertuning/

http://www.lunarplanner.com/Harmonics/planetary-harmonics.html

http://www.greatdreams.com/himalayan/meridians.html

http://pepperjackinteriors.wordpress.com/2010/10/30/the-physics-of-color-isaac-newton-did-you-know/

Function used to convert midi note number into hsv color:

int LayoutModel::note2hue(int note)
{
float calccol=(float)((note+4)%12)*30;
return (int)calccol%360;
}