- 27 of the most used scales, includes 13 of the most used jazz scales - Modes compare table - Unique colour coded (based on the colours of the rainbow). - It was never before this clear how to play a scale - Includes the Circle of fifths - Includes scale notation - Overview of natural harmonics - What scale on what chord at a glance - One Chord Jam, 8 styles, endless loops. - Backing tracks are all 5 chords. This makes it possible to play major and minor scales and arpeggios on the same track - If you want to become a good improviser on the guitar, practice your scales everyday. You will learn the scales faster when playing them over and over again on the same chord. This way it's much easier to develop your own licks.