Let's start jamming 陳慧嫻 - 逝去的諾言 chords, Practice these chords sequence - A, C#m, E, D, E, A, B and E. I suggest starting at a calm pace of 81 BPM, and as you gain confidence, approach the song's BPM of 162. With the song's key of A Major, set your capo to fit your vocal range and chord choice.