N O S T L G I FM – Workout ( Jennifer Lopez vs. Iggy Azelea vs. Sir Mix-A-Lot vs. Nicki Minaj vs. Groove Armada vs. MC Hammer vs. Meghan Trainor vs. Missy Elliott vs. Britney Spears vs. Diplo and Swick vs. Eminem feat. Nate Dogg vs. CandC Music Factory)