KeyNote Music Drills - Version 1.77 KeyNote Music Drills is designed to help music students learn to identify the notes of the bass clef, treble clef, and grand staff, and to locate their positions on the keyboard or guitar and bass guitar fingerboard. There are additional drills for the alto and tenor clefs, bass guitar, and key signature. Options include timed drills, set drill item count, Test Mode to record score and times, Top 10 Best Scores for all drills, file support for individual score statistics, visual feedback for elapsed time via progress indicator, and sound playback (registered version only).