Entertainment iHeartRadio Jingle Ball 2015: Selena Gomez, Demi Lovato and more must-see artists Print Share fbShare Tweet Email Chart-topping artists from Nick Jonas to The Weeknd are coming together for this year's 11-city iHeartRadio Jingle Ball tour. John Sykes, president of entertainment enterprises at iHeartMedia calls it the "hottest holiday ticket in America." While tickets to the Madison Square Garden show on Dec. 11 were sold out as of late October, fans will still be able to listen to the show via the iHeartRadio app. Here's this year's lineup. Comments We're revamping our Comments section. Learn more and share your input.