9. A Milli– Lil Wayne: The thing that made this song such a big summer hit was the timing. Tha Carter III was released in June of 2008 which was right at the start of summer. It also just so happened that Lil Wayne was making his declaration as the Best Rapper Alive and this was his album to back it up. ‘A Milli’ was the smash record of that album so it was only fitting that it fit into everybody’s summer playlist.