Dame Judi Dench, Bernadette Peters and Stephen Sondheim will join Miss Saigon star Lea Salonga in "Hey, Mr. Producer," a benefit for the Royal National Institute for the Blind on June 7 & 8 at London's Lyceum Theatre. The concert will be composed of excerpts from shows produced by Cameron Mackintosh. Also expected to appear are Tom Lehrer, Brian Blessed, Julian Lloyd Webber, Jonathan Pryce, Colm Wilkinson and Elaine Page. The evening will feature numbers from such shows as Cats, Phantom of the Opera, Les Miserables, Song and Dance, Martin Guerre, Side by Side by Sondheim, Putting It Together, and Follies.

There is no word as to what Salonga will sing, but since Miss Saigon is a Mackintosh show, there's a good chance she will perform a selection from that musical.

Salonga's voice is featured in Mulan, an upcoming Disney animated feature due to be released June 19.