Emilio Castillo doesn't feel like he's been leading Tower of Power for 50 years. But it does feel like the brassy group from the Bay Area has some miles on its mouthpieces. The group is celebrating its golden anniversary with the June 1 release of a new album, Soul Side of Town. And Tower of Power – which still includes original members Castillo, fellow saxophonist Stephen "Doc" Kupka, drummer David Garibaldi and bassist Francis "Rocco" Prestia – will also play a pair of 50th anniversary concerts on June 1-2 at the Fox Theatre in Oakland, Calif., which will be filmed for a documentary. Several former members, including keyboardist Chester Thompson and saxophonist Lenny Pickett, now leading the Saturday Night Live house band, will return for the shows.