Your search for the "MaxMSP" tag brought up 2 results:

E-Zine: Harmonic quantizing: The Schwarzonator for Live

Some people just don't seem able to understand harmonic structure. Now these people can play the piano and no one will ever notice their complete lack of insight!

E-Zine: Midi input over webcam in Ableton

Learn how to input notes in your favourite sequencer by only using hand signals and a webcam!