The starry new show will support Broadway Cares/Equity Fights AIDS and feature Valerie Fagan, Heidi Holcomb Janshon, Ruben Flores, Aaron Lazar, Emily Loesser, Mark Martino and Marni Nixon.

Richard Danley is musical director. Alessandrini directs. Tonight We Sing is billed as having "music (mostly) and lyrics (completely) by Gerard Alessandrini." The show is made up of new material written for these performances, and trunk songs from past Alessandrini shows.

The writer told Playbill On-Line that if Forbidden Broadway had not become an international enterprise to be maintained year-round, he would have been writing new works for the stage.

All tickets are $25. Performances are 8:15 PM Sept. 4 & 10 at Douglas Fairbanks Theatre (home to Forbidden Broadway), 432 W. 42nd Street between Ninth and Tenth Avenues.

Net proceeds go to BC/EFA. For tickets, call Telecharge at (212) 239-6200 or visit the box office. *

Alessandrini won the 2001 Drama Desk Award for Best Musical Revue for Forbidden Broadway. He has written all editions of the show since it began in 1982. He was also a member of the original cast and is heard on four Forbidden Broadway cast albums.

Alessandrini is a Boston native who graduated from the Boston Conservatory of Music.