YouTube breakout star and So So Def signee Dondria aka Phatfffat remixes Robin Thicke’s “Sex Therapy” for her new DJ Envy-hosted mixtape Dondria Duets. Like what you hear? Then click here to download the full mixtape, including Trey Songz’s “I Invented Sex,” The-Dream’s “Sweat It Out,” Mario’s “Break Up,” and more remixes with today’s hottest male R&B singers.