Broadway's Mr. Saturday Night has canceled its May 5 performance following a flu diagnosis for star and co-writer Billy Crystal. The news was shared by the production on Twitter.

Crystal and the production are currently expected to perform as scheduled May 6. Check MrSaturdayNightOnBroadway.com for the latest.

The musical, featuring a score by Tony winner Jason Robert Brown and Tony nominee Amanda Green, officially opened April 27 at Broadway's Nederlander Theatre. Previews began March 29.

Crystal returns to the character of stand-up comedian Buddy Young, Jr., a role he portrayed in the 1992 film of the same name. Crystal co-wrote, directed, and starred in the comedy about a borscht-belt comedian whose abrasive ego eclipses his success and alienates his family.

The musical also stars Tony winner Randy Graff (City of Angels, Les Misérables) as Buddy’s wife, Elaine Young; Oscar nominee David Paymer returning to his film role of Stan Yankelman, Buddy’s brother; Chasten Harmon as his agent, Annie Wells; and Shoshana Bean as Buddy's daughter, Susan. Rounding out the ensemble are Jordan Gelber, Brian Gonzales, and Mylinda Hull.

The project reunites Crystal with the film’s original co-authors, Lowell Ganz and Babaloo Mandel, who have adapted their original screenplay. Tony winner John Rando (Urinetown, On the Town) directs, with music direction by David O and choreography by Ellenore Scott.

The production features scenic design by Scott Pask, costume design by Paul Tazewell and Sky Switser, lighting design by Kenneth Posner, video and projection design by Jeff Sugg, sound design by Kai Harada, and hair and wig design by Charles LaPointe. The production stage manager is Tripp Phillips. Orchestrations and arrangements are by Brown.