With a new year comes a new music queen (or king). 2014 was arguably owned by Taylor Swift and Beyoncé, but who is set to conquer 2015? Swift is a definite contender, but there are some others you shouldn’t rule out just yet. Below, we give our theories on who will be the all-mighty music ruler of 2015. So many fan favorites are set to do it big this year, so the race for emperor/empress will be close. Are you ready to rumble? Rihanna Rihanna’s last album was 2012′s Unapologetic, and her Navy is getting very antsy for the follow-up. The artist is predicted to release her eighth effort in 2015, reportedly titled R8. The LP is arguably music’s most anticipated event this year, and Rihanna could make 2015 her’s based on this excitement alone. RiRi’s music also sells like hotcakes — her first six albums all made top five on the Billboard 200 — so be prep...