To start learning 張國榮 - 挪亞方舟 chords, centre your learning around these elemetal chords sequence: Bbm, Eb, Ab, Fm, Db, C, Am, D, G, Em, Db and Eb. A strategic approach would be to train at 70 BPM initially, and then accelerate to the song's tempo of 140. Considering the song's key of G Major, position your capo to suit your vocal and chord preferences.