To learn Pentatonix - Shallow chords, your practice should emphasize these chord progressions: C, G, D, G, D, Em, G, Bm, Em and D. To master the tempo, it's wise to start at 78 BPM before aiming for the song's 156 BPM. To match your vocal range and chord inclination, adjust the capo in line with the key: G Major.