Mac users interested in Disk drill os x 10.5.8 generally download:
Disk Drill is a Mac program designed to help you restore lost or deleted data from your computer. This utility is compatible with a wide variety of data storage containers, analyzes disk usage, helps you reclaim space on your drive, and so much more.
BigEars is easy to use ear training software for the PC and Mac OS X. Ear training drills include intervals, triads, scales and advanced ear training lessons on seventh chords, ninth chords and dominant chords, making it an excellent choice for the jazz student. Extended chords are played using shell voicings just as a jazz pianist would play them.