Talent Talk
By Roman Kozak
Billboard -- December 19, 1981

Tom Petty dropped by Dooley's nightspot in Tempe, Ariz. Dec. 8 and played an entire set with advertised headliner Del Shannon. Apparently, Dooley's is one of Petty's favorite clubs (he jammed with Muddy Waters there recently) and a few hours before showtime notified all involved that he would be sitting in with Shannon...