December 14, 2015 1:26 pm If You Call These Students, They'll Sing Carols for You Volunteers at the University of Illinois worked at the 52nd annual Dial-A-Carol, singing holiday songs to people who called in from around the world. US & World Videos 0:37 Ex-Abercrombie CEO arrested on sex trafficking-related charges 9:07 Selena Gomez and Benny Blanco's sweetest moments 0:31 The price to watch Lionel Messi in Los Angeles 2:13 Real-life ‘Karate Kid' meets his inspiration 2:12 What to expect in court as Trump faces 2020 election charges in DC