The quirky show opened on Sept. 14, 2000, after previews from Aug. 11. The title has several meanings. Most significantly, Mono is a play in which the 13 characters, all barflies, don't believe in dialogue. Hence, there are a lot of monologues and one-sided discussions. This state of affairs proves interesting, text-wise, since among the solipsists at this tavern are a mute and a sock puppet.

The roles were originally filled by actors of varying ethnic background, including Japanese, Israeli and Indian performers. Each actor gets a chance to play several different parts, as the performers rotate assignments every week.

Where do audience members fit into this soup of dramatic intentions? Well, they double as bar patrons and eavesdroppers and must keep on their toes to track the overlapping theatrical arias and storylines.

Tanenbaum, who also directs, is the author of such works as Q101 and Blink.

Tanenbaum will mark the occasion by unveiling his latest work, Mambo Quasimodo, performed by Lawrence Jansen, a veteran of Mono. As you might guess Quasimodo is a stand-up comedy about a hunchback. Tickets are $12. Surf Reality is located at 172 Allen Street on the second floor. For more information, call (212) 358-3447.