There was a lot of shuffling in the countdown from May to June, most notably Jason Derulo, who moved up a remarkable 30 spots to close out the top 5. It's his first top 5 since 'In My Head' reached that spot in 2009. Up 26 spots this month is Ke$ha. Her collaboration with will.i.am. called 'Crazy Kids' comes in at #14. will.i.am's own single #ThatPower, featuring Justin Bieber climbed 19 spots to fall a few spots shy of Ke$ha at #17.
Additionally, two favorites are back in the top ten with different tunes. Rihanna's ballad 'Stay' premiers this month at #7. Bruno Mars, who has been near the top of the charts with 'Locked out of Heaven' and 'Treasure,' has added another hit to the list. His single 'Treasure' is far from being buried, as it debuts at #9 on the countdown.
June features 15 debuts in total, including a lot of new collaborations to get you ready for summer.
Check out the full top 40 for June below and see what songs are already making cases for being summer anthems.