吉他和弦
fittibs
Guitar 3D: Learn guitar chords
Polygonium Inc.
Chord ai - learn any song
Chord ai
smart Chords: 40 guitar tools…
s.mart Music Lab
Ultimate Guitar: 吉他和夏威夷四弦琴的和弦
Ultimate Guitar USA LLC
Chordify: Song Chords & Tuner
Chordify B.V.
コード譜ライター by インスタコード
InstaChord Corp.
Yousician: 屢獲殊榮的音樂教育應用程式
Yousician Ltd.
Fretonomy - 學習指板
Strong Apps LLC