A chord performance training system is realized on a personal computer having a display and a keyboard in accordance with music application software. The display provides a user with three types of windows on a screen, namely a main window for displaying chord progression, a select window for displaying...http://www.google.fr/patents/US6504090?utm_source=gb-gplus-shareBrevet US6504090 - Apparatus and method for practice and evaluation of musical performance of chords
Apparatus and method for practice and evaluation of musical performance of ...
