However, if you're looking for movies specifically about rock music, here are some top picks from 1999:
Content rating. Motion Picture Rating (MPA) Rated R for strong sexuality, and for language. The 100 Best Movies of 1999 - Rotten Tomatoes
: Featuring a standout cover of "I Want You to Want Me" by Letters to Cleo, the film’s soundtrack is often cited as a quintessential piece of late-90s rock culture. The Matrix
But there's another movie from 1999 that fits well with the description of being a major rock movie: "Runaway Bride" doesn't fit well either.