Oh okay. It just seems that a lot of musician biopics are the same, they get famous turn to drugs, then are miserable, and they then pick themselves back up again. Accept for the ending to The Doors, but the rest seemed the same as the others.
This just reminded me of Walk Hard (2007).

Overall I don't consider it a great movie or a particularly great comedy and there were some parts I didn't like, BUT it effectively spoofs most of the modern music biopics.

If you like music biopics or if you don't like them (due to their formulaic nature) you might appreciate Walk Hard for spoofing them. Throughout the movie, the character Dewey Cox directly and indirectly spoofs aspects of Elvis, Hank Williams, Johnny Cash, Ray Charles, Jim Morrison, Bobby Darin, Brian Wilson and the Beatles (among others).

For all its poor scenes it makes up for in several memorable ones, and the music created for the movie (although silly) is really quite good as actor John C. Reilly gets to show off his stunningly good singing voice.