One of those songs that always puts me in a better mood... I scrolled down the YouTube comments and found the one I've quoted below. Despite the number of times I've heard this, I'd never picked up that bit about the pianos. "I love the acoustic piano on the left and the electric piano on the right and both playing completely different funky parts and somehow managing not to step on each others toes."
Went to see a tribute band called Carnaby Army on Saturday, and thoroughly enjoyed them. The encore number was their version of this wonderful little audience participation number.