To start learning Dinosaur Jr - Crumble chords, build your understanding on these basic chords - F, Bb, Dm, C, Bb, F, Bb, C and Bb in sequence. Begin your practice at a relaxed 69 BPM, then work your way up to the song's BPM of 138. With F Major as the song's key, tweak the capo to cater to your vocal pitch and chord likes.