Learn the basic chords of Lyn - (The moon embracing the sun OST) Back In Time chords, with this master sequence: F#m, G, A, Bm, F#m, G, Bm, G and D. Begin your practice at a relaxed 73 BPM, then work your way up to the song's BPM of 146. Align the capo with your vocal depth and chord choice, bearing in mind the song's original key: D Major.