[chord_hero progression="C G Am F" instrument="piano" difficulty="lenient"
mode="challenge"][chord_hero progression="Cmaj7 Am7 D7 G7 F#m7b5 Bdim Eaug" instrument="piano" difficulty="strict" mode="challenge"]
[chord_hero progression="C G Am F" instrument="piano" difficulty="lenient"
mode="challenge"][chord_hero progression="Cmaj7 Am7 D7 G7 F#m7b5 Bdim Eaug" instrument="piano" difficulty="strict" mode="challenge"]