Streep sings Sondheim, and finds her voice

NEW YORK -- Meryl Streep sings. Her fans know this. Meryl Streep sang in "Postcards From the Edge," in "Ironweed," on the children's album "Philadelphia Chickens" and, of course, in "Mamma Mia," the movie that improbably, given all the successes in her career, made her a box-office star. That Meryl Streep can sing Sondheim is something that music-theater aficionados are likely to question -- until, at least, they've heard it.