To jam and learn Cyua - A Letter chords, your primary focus should be mastering these chords sequence: G, C, D, Em, F, Am, G, Am, Bm and C. Kick off your practice at a gentle 60 BPM, then escalate to the song's tempo of 120 BPM. Set the capo considering your vocal range and favored chords, aligned with the key: G Major.