My son told me he listens to Drake.  I don't know this musician, so I'm not sure if it's okay for a 12 yr old or not.
I know he's got a platinum album. 
So he's certainly popular.  I wonder if Drake has good messages in his songs.
He gained recognition as an actor on a teen drama so maybe 
I think Drake might have a theme of drugs in his music.
Perhaps, maybe you could look at some of Drake's lyrics online to see.
Oh that's a good idea!  I forgot that you can find lyrics online!  I'm going to go do that right now!  Thanks for the suggestion.
One of his albums is called Thank Me Later, you could start there.