Byron Janis, an American pianist celebrated for his extraordinary combination of technical virtuosity and urgent expression in Romantic-era music, died March 14 at a Manhattan hospital.

But the one drastic alteration in the Paramount musical turns out to be its most meaningful, a model for future onscreen reimaginings of retrograde material: the overdue overhaul of Janis Ian.

That’s so not fetch. Singer Janis Ian admitted to having mixed feelings about Tina Fey naming a “Mean Girls” character after her. “I would’ve felt better about it [had she] asked me ...