I was listening to Magic Bus on Live at Leeds recently and was wondering how Entwistle gets that thunderous percussive sound in the Bo Didley beat of that song. Normally guitars do the percussive beat in a Bo Didley shuffle but I can hear electric guitar riffs (Townsend) and an acoutic guitar (Daltrey) besides the part that I am talking about it. It definitely has a picked sound, which is common for Entwistle but it also seems to be hand muted like a guitar, with possibly a short slap back echo? But this alone doesn't explain why it so big sounding. I'm a guitar player, not a bass player, but this intrigued me.