Sometimes being nice has its rewards.

Take Buddy Young Jr., the bitter, self-centered, self-destructive comedian from the 1992 flop film “Mr. Saturday Night,” which Billy Crystal starred in, directed and co-wrote based on one of his ’80s sketch creations. This sour pickle of an old-school comic as the basis for a musical? Don’t make me laugh.

But a funny thing happened on the way to Broadway. For this new stage adaptation, Crystal and his co-screenwriters Babaloo Mandel and Lowell Ganz have re-envisioned Buddy with warmer tones and softer edges. They’ve also given him some self-awareness and playfulness, so an audience immediately loves rather than loathes him.

With Crystal turning on the impish charm and non-stop zingers, that’s an easy reach — at least until the backstory kicks in and Buddy is revealed to be a bit of a bastard. By then, though, it’s too late. Buddy is near-redeemable enough for audiences to root for him to cross the nice-guy finish line.

Directed by by John Rando, the musical now focuses on Buddy’s family as much as his checkered career, which spans from the Borscht Belt to the early days of television to gigs at senior centers. The addition of music, too, adds dimension to the characters, allowing the audience to understand their interior lives without missing a punchline.

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The end result is certainly the funniest show on Broadway in years, if not the most likable. Look for a healthy run, at least with headliner Crystal, who last packed houses with his autobiographical show “700 Sundays.” And with composer Jason Robert Brown and lyricist Amanda Green supplying one of the most appealing and disarming scores in some time, what’s not to like?

As one of the songs in the show reminds us, it’s all about timing. One could imagine Crystal, Randy Graff (who plays Buddy’s supportive wife Elaine) and David Paymer (playing the comic’s put-upon brother Stan, a role that earned him an Oscar nomination in the film) really killing it a decade or two earlier, with more assured singing voices and without the audience suspending their disbelief when the trio plays much younger versions of their characters.

Still, it’s the kind of show where verisimilitude is not the goal. It knows what it is: A great comic vehicle with a solid-though-unsurprising story — with a little love, if not schmaltz, thrown in for good measure.

With a core cast of five including a terrific trio of sketch performers — Jordan Gelber, Brian Gonzales and Mylinda Hull, playing  a slew of characters — it’s clearly not a show about size, scope and production values. It’s about the music, the performances and, ultimately, the comedy.

The Brown/Green score — a new musical color combination that one hopes stays in fashion — is bright, breezy and smart, recalling the type of easy-going scores with which Cy Coleman used to delight audiences. Brown’s ability of find a comfortable groove with an underlay of sophistication, and Green’s deft lyrics are a perfect match for Crystal’s wit and winks.

The uniformly fine cast plays it for laughs, but they also play it for real. As Buddy’s adult daughter Susan, Shoshana Bean is both tough and tender. She also has the best pipes on stage and soars with her two solos, “There’s a Chance” and “Maybe It Starts With Me.”

Chasten Harmon as Buddy’s exasperated agent Annie Wells shows she’s more than a plot device and definitely more than a straight man. Graff’s Elaine loves Buddy, so the audience also loves him through her eyes, even if their marriage made her defer her dreams (as expressed in the charming tune “Tahiti”).

Meanwhile, the chemistry between the comic and his brother is crystal clear. (As Buddy would joke, “See what I did there?”) A seasoned veteran actor of grace and intelligence, Paymer once again brings heart and humor to his role and even some rage, which he expresses movingly in “Broken.”

But the show is Crystal’s and he’s earned it, having lived with the character for decades and skillfully recrafted this 1990s-set homage to a previous era of comedy. It was an era that wasn’t always the subtlest, often offended and mostly came from a blinkered boys’ club. But Crystal makes us see that even with flawed heroes, there still can be music in the laughs.

‘Mr. Saturday Night’ Review: Billy Crystal Brings the Laughs in His New Broadway Musical

Nederlander Theatre; 1191 seats: $179 top. Opened April 27, 2022. Reviewed April 22. Running time: 2 HOURS, 35 MINS.

  • Production: A presentation by James L. Nederlander, Face Productions, Inc., Hunter Arnold, Michael Cohl, TEG Dainty, Candy Spelling, Steve Trexler, Marc David Levine, Caiola Productions, Crossroads Live, Jamie deRoy, Roy Furman, Amy Granat, Grove Entertainment, John Gore Organization, Wolf Gutterman, Van Kaplan, Larry Magid, Peter May, Carl Moellenberg, Beth W. Newburger, Albert Nocciolino, Eve Price, Iris Smith, The Shubert Organization, Howard Tenenbaum and Barry & Fran Weissler of a musical in two acts by Billy Crystal, Lowell Ganz & Babaloo Mandel, based on the film by Crystal, Ganz and Mandel, by special arrangement with Warner Bros. Theatre Ventures, with music by Jason Robert Brown and lyrics by Amanda Green.
  • Crew: Directed by John Rando. Choreography, Ellenore Scott; sets, Scott Pask; costumes, Paul Tazewell & Sky Switser; lighting, Kenneth Posner; sound, Kai Harada; projections, Jeff Sugg; orchestrations, arrangemenmts and orchestrations, Jason Robert Brown; music director, David O; production stage manager, Tripp Phillips.
  • Cast: Billy Crystal, Randy Graff, David Paymer, Shoshana Bean, Chasten Harmon, Jordan Gelber, Brian Gonzales, Mylinda Hull.