To learn Opeth - Harvest chords, your practice should emphasize these chord progressions: Gm, Dm, Am, Bm, G, Gb, Am, Em, Bm, Ab, G and C. Kick off your practice at a gentle 62 BPM, then escalate to the song's tempo of 125 BPM. Considering your vocal pitch and chord choices, adjust the capo in accordance with the key: C Minor.