I feel like bruno will have a massive year.
Beyonce, Gaga and Katy will do really well the first half of 2013
Taylor will get her another 4x platinum album.
Lil wayne and drake will do well too
Rihanna doesn't seem to be having longevity with her album so I'm not sure.
Adele, Nicki and Britney will do well in the later part of 2013 well into the 2014 year.