There are several rock musicals with 4 letters. Here are some possibilities:
- HAIR (1967)
- RENT (1996)
- ROCKY (2014)
- FAME (1988)
- PINK (2006)
- HEATHERS (2010)
- JEFF (1972)
- GODSPELL (1971)
- JESUS CHRIST SUPERSTAR (1970)
Is there any specific information you have about the rock musical you’re looking for? Knowing the year it premiered, the plot, or any of the actors or musicians involved could help narrow down the possibilities.