One of Off-Broadway's longest-running shows, Our Sinatra, marks its 1,000th performance at the matinee performance on Sunday, May 5.

A full-length celebration of the music of Frank Sinatra — featuring tunes the legendary singer made famous as well as anecdotes about his life and career — the Off-Broadway musical revue currently stars Paul Greenwood, Hilary Kole and Tom Postilio. Originally presented at the Algonquin Hotel's Oak Room, Our Sinatra made its official Off-Broadway debut on Dec. 19, 1999, at the Blue Angel Theatre. The show currently plays The Reprise Room at Dillon's, which is located at 245 W. 45th Street.

Conceived by original cast members Eric Comstock, Christopher Gines and the aforementioned Kole, some of the many tunes rendered by the show's trio of performers include "At Long Last Love," "All the Way," "Time After Time," "These Foolish Things," "Witchcraft" and "Where or When." Kurt Stamm directs with production supervision by Richard Maltby, Jr.

Our Sinatra plays Monday, Tuesday, Wednesday, Friday and Saturday evenings at 8 PM, Sunday nights at 7:30 PM with Wednesday matinees at 2:30 PM and Sunday matinees at 3 PM. Tickets — ranging from $50-$80 — are available by calling Telecharge at (212) 239-6200.

—By Andrew Gans