It had good music with decent singing, and that's about the only positive I got from it.
Tom Cruise played, well, Tom Cruise. An egotistical, narcisistic, has been.
The two main characters were about as shallow as, well, Tom Cruise. Did a good job singing, but makes you woner what the people were thinking when they created their characters.
Just avoid this movie. Even if you're a fan of classic rock, avoid this garbage. The whole plot is just shallow. If you like the music, just go buy the soundtrack, or better yet, the original albums. Either way, no point in watching this garbage.