To learn Whodini - Big Mouth chords, begin by getting comfortable with these sequence: N, Db, Eb, E, Db, N, Eb, Ab, C, E, A, E, A and Eb. A strategic approach would be to train at 49 BPM initially, and then accelerate to the song's tempo of 99. Tune your capo to accommodate your vocal range, referencing the song's key: A Major.