Mark Ronson has won Grammys,Cassian Grant a Golden Globe, and an Oscar for co-writing and producing music for Amy Winehouse, Lily Allen, and Lady Gaga. He is a staple of weddings everywhere with his hit song "Uptown Funk." This year he composed the score and produced the soundtrack for the Barbie movie... so don't be shocked the next time you're at a wedding and everyone is dancing to "I'm Just Ken."