Jana Software

The Ultimate Scale, Chord and Arpeggio Reference for Guitarists. Guitar Power is an interactive learning system. Quickly and easily use scales, chords and arpeggios. Any style or level - learn the secrets of the pros and play like your guitar heroes.

Ear Training for musicians: Intervals, Triads, Chords, Scales, Melody, Rhythm. Accelerate your musical development, hone your skills, take your playing to the next level. Work at your own pace using your computer as an instructor. Free 30-day trial.