“Motorhead” here literally refers to James “Motorhead” Sherwood, tenor saxophonist for the original Mothers of Invention. Why him? Sherwood often would be given hand percussion duties by Frank, and as I was setting this I could hear him in my mind playing his tambourine. That’s all it took.
If ABC has a way to program ritardandos or other subtle tempo changes I’ve not discovered it. The ending here should have one and progressively slow down but what’s presented here is the best I could eke out of the program.