套裝

iPad 和 iPhone

The Guitar Chord Challenge
音樂
Bass Guitar Scales in Colour
音樂
Bass Guitar Colour Scales
音樂
Magic Circle of Fifths
教育
Guitar Chords in Colours
音樂
Guitar Flash Chords
音樂

iPad

Mac

Bass Guitar Scales in Colour
音樂
Bass Guitar Colour Scales
音樂
Chords and Scales for Piano
音樂
Guitar Chords in Colour
音樂
Guitar Scales in Colour
音樂
Magic Circle of 5ths
音樂