The talented singers playing eventual superstars shine. Yet key components go unexplained (most viewers will have no idea what “ the Carson album” is) and key characters just disappear, poof.

“Because no one ever tried before,” responds the Dreamer. “You do know no one’s ever done this before,” says the Friend. Blatantly expository dialogue spells out what everyone’s thinking and what’s at stake. It plays as a “Greatest Hits” of Neil Bogart’s life rather than a cohesive album - there’s no narrative drive. Stop me if you’ve heard this one before: Dreamer bucks convention, struggles, success leads to excess and drugs, marriage falls apart, etc., etc. The worshipful film commits just about every sin in the Big Book of Biopics.

It’s a labor of love, written and directed by Bogart’s son Timothy Scott Bogart (with other Bogart sons involved) about a flamboyant behind-the-scenes figure who went through many guises before finally hitting it big. The soundtrack of the film is buoyed by those and non-Casablanca classics to which the movie claims a significant Bogart connection (such as Bill Withers’ “ Ain’t No Sunshine” and “ Lean on Me” The Isley Brothers’ ” It’s Your Thing”). The bet eventually paid off, providing parts of the soundtrack of the ’70s: KISS’ ” Rock and Roll All Nite” the Village People’s “ YMCA” whole seasons of Summer hits.

“ Spinning Gold” traces the story of gamblin’ dreamer and “record man” Neil Bogart ( Jeremy Jordan), the singer-turned-music executive who audaciously launched the independent label, betting heavily on himself. Unfortunately, the biopic about its founder intentionally remembers him too fondly, hitting more wrong notes than right ones. Aficionados of ’70s pop will fondly remember Casablanca Records as the home of KISS, Donna Summer, Parliament and more.

The big spin