On May 22, the Library of Congress held a special 70th birthday tribute to this titanic figure in the history of the American musical theater, which included a concert version of his rarely heard 1974 musical, The Frogs, based on the comedy by Aristophanes, and a selection of Sondheim's favorite songs by other writers, offered with the composer's personal commentary.
Performers at the concert event included Nathan Lane, Audra McDonald, Brian Stokes Mitchell, Marin Mazzie, Debra Monk and Davis Gaines.
The Stephen Sondheim birthday salute will be broadcast on National Public Radio stations on June 21 -- check your local listings for stations and times.