Katy Perry, Leona Lewis and LL Cool J are to take part in the Grammy Celebration Concert tour.
The five-date tour will open at the Hollywood Palladium on April 9th with a performance from Lewis.
Perry will top the bill at The Fillmore in Miami Beach on May 13th, while LL Cool J will conclude the trip in New York on May 28th.
Other acts scheduled to take part in the tour will be announced shortly.
Tickets for the Grammy Celebration will be available exclusively via select T-Mobile stores.
Katy Perry live
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