FIRST OFF . . .

David Bowie will appear in a new Pepsi commercial. The ad, to be filmed in Europe this spring, will cast Bowie opposite Tina Turner--currently touring Europe--performing one of Bowie’s hits, Pepsi-Cola Co. said Wednesday. The soft-drink firm also will be the exclusive sponsor of this summer’s North American concert tour by Bowie, who’s been an influential force on the music scene for the last two decades. The tour is to be called “David Bowie: The Glass Spider Tour,” and will include at least 30 performances.