The Top 10 Workout Songs for April 2013
Which of your pop favorites have been hitting the studio together? Find out in this month's playlist
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."