the foundation of improvisation＝find every chord's tones with your eyes closedroot, 3、5、7。
① pick an example and voicing(root357 / 357root / 5root73 / random / Guide Tones), rhythm and repeat count
② ▶ demo:auto-play,staff＋jianpu＋the keys light up in sync
③ 🖐 my turn to play:Follow the flashing hints and press yourself — non-chord tones are greyed out and silent,you can't press a wrong note