This one'll take ya back:
Follies is a musical with music and lyrics by Stephen Sondheim and a book by James Goldman. The story concerns a reunion in a crumbling Broadway theatre, scheduled for demolition, of the past performers of the "Weismann's Follies," a musical revue (based on the Ziegfeld Follies), that played in that theatre between the World Wars.
http://en.wikipedia.org/...
It's filled with iconic Sondheim numbers. For example, Broadway Baby:
The Broadway production opened on April 4, 1971, directed by Harold Prince and Michael Bennett, and with choreography by Bennett. The musical was nominated for eleven Tony Awards and won seven. The original production, which ultimately lost its entire investment, ran for 522 performances. The piece has enjoyed a number of major revivals, and several of its songs have become standards, including "Broadway Baby", "I'm Still Here", "Too Many Mornings", "Could I Leave You?", and "Losing My Mind".
(From the Wiki link, above the fleur-de-kos.)
Elaine Paige is still here:
but Judith Ivey is losing her mind: