To learn 秦淮 - 海水清又藍 chords, focus on the sequence of these chords: Fm, Bb, Cm, Eb, Fm, Bb, Eb, Cm and Fm. Begin your practice at a relaxed 45 BPM, then work your way up to the song's BPM of 91. Adapt the capo setting considering your vocal range, with reference to the key: Db Minor.