Half-Cocked (1994)

A group of high school teens steal a van full of music equipment and pretend to be a band called "Truckstop" in order to stay on the road. When the band starts playing gigs, their sound is largely inconsistent and incoherent, however, over time the band becomes increasingly competent in their musicianship.

Unfortunately the movie Half-Cocked is not yet available on Disney Plus.