Which of your pop favorites have been hitting the studio together? Find out in this month's playlist

By Chris Lawhorn
April 07, 2013
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Collaborations reign in this month's workout playlist. Justin Bieber lent Will.I.Am a hand on his latest track, Italian super producer Alex Gaudino turned the mic over to Jordin Sparks, and Pitbull and Christina Aguilera urged folks to seize the day-while seizing, for themselves, the hook from '80s classic "Take On Me."

Here's the full list, according to votes placed at RunHundred.com, the web's most popular workout music website.

To find more workout songs, check out the free database at Run Hundred. You can browse by genre, tempo, and era to find the best songs to rock your workout.