D'Accord Keyboard Method is a multimedia course for Windows designed to help you learn to play keyboard and piano — also useful for those who stopped playing for a long time and want to start playing again.
D'Accord Personal Guitarist is the most complete software for guitar players that enables students and musicians to practice and improve their playing skills in an easier way than traditional tablatures.
D'Accord iChords 2.0 is a harmony (chords) transcription software that lets you learn and play the chords of any song without having to search for tablatures and sheet music.