Travel back in time, and you’ll find an axiom of practical wisdom: “Never teach a cow to sing. It wastes time, and annoys the cow.”
At Back to the Future: The Musical, which opened Thursday night in San Francisco, the cow is the audience of Back to the Future fans. The futile singing lesson is the format of musical theater itself.
Who wanted a Back to the Future musical? That was my first question, and the only answer I could surmise was: someone who wants to milk a beloved franchise for even more money. Once the curtain rose, and I watched this would-be 88 mph production grind to a halt over and over with introspective singing, I had several other questions, too.

Primarily, why would any Broadway producer believe Back to the Future fans will like musical theater? The show knows its audience is a bunch of Gen X nerds; it serves up Pac-Man and Frankenstein references, a Star Trek joke and a Star Wars sight gag. These are not people planning their summer vacations around Patti LuPone’s performances.
But surely, you say, there must be some crossover fanbase. And I would say: yes! That person is me! I was the prime age of 10 when Back to the Future came out, I watched it approximately 137 times on a grainy VHS dub, and also grew up to love musical theater. I even adore a few other trashy musical adaptations from movies, like Mean Girls: The Musical and Legally Blonde: The Musical.