“Bob the Musical” keeps humming along at Disney.

The Mouse House has hired Matthew Fogel to pen a new draft of the musical that “21 Jump Street” directors Phil Lord and Chris Miller are attached to helm.

The comedy revolves around Bob, a mild-mannered man who, after being struck on the head, suddenly hears the “inner song” in people’s hearts and finds his life instantly turned into a musical, much to his dismay.

“Book of Mormon’s” Robert Lopez will pen the songs for the film. Marc Shaiman (“Hairspray”) had previously been attached.

Fogel’s credits include Fox and New Regency’s “Big Mommas: Like Father, Like Son.”

Lord and Miller co-wrote and directed Sony’s toon “Cloudy with a Chance of Meatballs.” Their bigscreen version of “21 Jump Street” bows in March, starring Channing Tatum and Jonah Hill.

“Bob the Musical” has long been in development at Disney, with Mike Bender as well as Babaloo Mandel and Lowell Ganz penning scripts for the comedy that both Adam Shankman and Mark Waters were previously attached to direct at different times.

Benderspink’s Chris Bender and J.C. Spink and Contrafilm’s Beau Flynn and Tripp Vinson are producing the pic.