Let's start jamming The Guess Who - Undun chords, practice the chord sequence Em, G, F#m, Am, G, F#m, B, G, B and Em. Begin your practice at a relaxed 68 BPM, then work your way up to the song's BPM of 137. Align the capo with your vocal depth and chord choice, bearing in mind the song's original key: E Minor.