4. Selena Gomez - "Forget Forever"
Coming off her new (and first solo) album 'Stars Dance', 'Forget Forever' isn't even a single yet but it was leaked a while back and it's remained a fantastically catchy pop tune through months of repeated plays and speculation over the song's intended target. All-but-confirmed to be about her tumultuous relationship with ex Justin Bieber, Selena's vocals are evolving and the tune is a dance-infused future radio-smash that is perfect for any kind of post-relationship troubles. Seemingly crafted for a video of driving through the sunshine with your friends to forget your ex's name, the song is a pure pop hit that delves smartly into the dance camp without becoming stereotypically entrenched there. A perfect song for those warm summer days where reflection of past love is all but imminent and one that should have ruled the radio this month.