Over the weekend, rapper Sir Mix-a-Lot collaborated with the Seattle Symphony on a rousing orchestral rendition of the 1992 hit "Baby Got Back" in his hometown (Seattle) as part of the Sonic Evolution Project. There weren't any giant fake butt mountains in this one, but there were a ton of girls getting down bachelorette party-style alongside a giant string section, horns, and the works. If you're having a hard time perking up this afternoon, then pay attention to the girl in the black dress and glasses for your Monday motivation. What else can we say? Baby got back.