XTC was a Swindon "Beatle-based pop" band immortalized in "XTC Vs. Adam Ant." Andy Partridge, XTC's principal singer/songwriter, issued an EP for John Flansburgh's Hello CD Of The Month Club, and They Might Be Giants covered their song "25 O'Clock" on the tribute album to them.
They also appeared on a split flexi-disc single with TMBG.