Pink says her new song Raise Your Glass is meant to celebrate those who feel left out. The singer told InDemand.fm she'll be "celebrating a gay wedding [in the video]," and explained the scene was inspired by her personal experience. She revealed, "I threw my best friend's wedding in my backyard [she] is gay...and it was absolutely beautiful. And the end of it, her mom said, 'Why can't this be legal?' and started crying. It was just the most heartbreaking thing I've ever seen." Raise Your Glass is from Pink's forthcoming best-of, Greatest Hits...So Far!!!