The summer's brought with it a generous share of gym gems. Particularly, it was a good month for collaborations: 3OH!3 and Ke$ha, Enrique Iglesias and Pitbull, David Guetta and 3/4 of Black Eyed Peas — on different tracks, no less...

It's also been a fruitful time for folks expanding their boundaries—whether it's Lil Wayne's continued rock dabbling, the Pet Shop Boys covering Coldplay, or Sam Adams rapping over an unlikely Annie Lennox sample.

1. David Guetta, Will.I.Am & Apl De Ap- On The Dancefloor - 130 BPM

2. Sam Adams - Driving Me Crazy - 121 BPM

3. Pet Shop Boys - Viva La Vida/Domino Dancing - 138 BPM

4. Goldfish - Fort Knox - 117 BPM

5. Lil Wayne & Nicki Minaj - Knockout - 161 BPM

6. The Heavy - How You Like Me Now - 111 BPM

7. 3OH!3 & Ke$ha - My First Kiss - 138 BPM

8. Enrique Iglesias & Pitbull - I Like It - 129 BPM

9. Shiny Toy Guns - Major Tom - 165 BPM

10. David Guetta, Chris Willis, LMFAO & Fergie - Gettin' Over You - 130 BPM

What Do You Think?