Chord ai
Chordify: Song Chords & Tuner
Chordify B.V.
Chord Library
Terence M
smart Chords: 40 guitar tools…
s.mart Music Lab
Ultimate Guitar: Chords & Tabs
Ultimate Guitar USA LLC
All Chords Guitar
mv^2 studio
コード譜ライター by インスタコード
InstaChord Corp.
Chord Tracker
Yamaha Corporation
Fretonomy - 프렛보드를 익혀 보세요
Strong Apps LLC