To learn Herbie Hancock - River chords, begin by getting comfortable with these sequence: Gm, F, Bb, Eb, Bb, Gm, F, Eb and F. Kick off your practice at a gentle 50 BPM, then escalate to the song's tempo of 100 BPM. Align the capo with your vocal depth and chord choice, bearing in mind the song's original key: Bb Major.