To learn 王菲 - 但願人長久 chords, anchor your practice on these foundational sequence of chords - C#m, A, F#m, E, B, C#m, A and E. A strategic approach would be to train at 58 BPM initially, and then accelerate to the song's tempo of 118. Set the capo considering your vocal range and favored chords, aligned with the key: E Major.