Jason Mraz is an American singer-songwriter. Mraz released his debut album, Waiting for My Rocket to Come, which contained the hit single "The Remedy (I Won't Worry)", in 2002, but it was not until the release of his second album, Mr. A-Z, in 2005, that Mraz achieved major commercial success.

Christina Perri is an American singer-songwriter and musician from Philadelphia. Her song "Jar of Hearts" charted in the United States after it was featured on the Fox television show So You Think You Can Dance in 2010.