Jem (1986)

With the help of her father's greatest creation, a holographic computer named Synergy, Jerrica Benton and her sisters team up to create the band Jem and the Holograms, who will go head-to-head with their rivals, the Misfits and their greedy road manager Eric Raymond, in a battle of the bands for control of Mr. Benton's music company, Starlight Music.

Unfortunately the movie Jem is not yet available on HBO Max.