To learn 안재욱 - (Reds In Anjaewook 4) 친구 chords, anchor your practice on these foundational sequence of chords - Fm, Cm, Bbm, Ab, C#, Eb, Fm, Cm, C#, Ab, Am, D, G, D and Em. Begin your practice at a relaxed 69 BPM, then work your way up to the song's BPM of 138. Adjust the capo based on your vocal range and chord preference, keeping the song's key of G Major in mind.