Leon Knoles

A lineup of artists -- including Beck, Common, Gary Clark Jr, Foo Fighters, H.E.R., Alicia Keys, John Legend, Chris Martin, Mavis Staples, St. Vincent, Usher and more -- pay tribute to Prince's unprecedented influence on music.

In honor of the 10th anniversary of Countdown to Christmas, this music special brings together the stars of Hallmark Channel's Countdown to Christmas original movies. The cast gathers at the house of Lacey Chabert to sing their fa...