Chords for Chicago and Black Sabbath - “Plenty High or 6 to 4”

To jam and learn Chicago - 25 Or 6 To 4 chords, your primary focus should be mastering these chords sequence: F, E, Am, G, F#m, F, E, A, G, Am and F#m. I suggest starting at a calm pace of 74 BPM, and as you gain confidence, approach the song's BPM of 148. For a balanced pitch, adjust the capo with respect to your voice and the song's key: A Minor.