I know Will Lee the bass player was but don'tknow about the others. Anton Fig was the drummer and a girl was on guitar with Schaffer of keys fo rLetterman. I'm sure all these guys are top studio guys too but still amazing.

BTW I liked the old Letterman band of 4 pieces without the horms of the later one.
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Bill in SC --- Roland BK9 (2) Roland BK7M, Roland PK5 Pedals, Roland FP90, Roland CM30 (2), JBL Eon Ones (2) JBL 610 Monitor, Behringer Sub, EV mics, Apple iPad (2) Behringer DJ mixer