Pittsburgh's Petersen Events Center will be the site of holiday cheer and hit music when some of pop's biggest stars perform at 100.7 Star's festive O Starry Night concert. First you have Elle King, the Los Angeles native whose hits "Playing for Keeps" and "Ex's and Oh's" are fueling her rise to stardom. Next there's George Ezra, the British singer-songwriter whose love for Bob Dylan and the Delta blues inspired his breakthrough track, "Budapest." Then you have Nate Ruess, the lead singer of Fun ("We Are Young") and current solo performer promoting his debut album, Grand Romantic, which is filled with his trademark passionate indie-pop jams. And rounding things out is Rob Thomas, the Matchbox Twenty and "Smooth" singer who's continued to blaze his own trail as a solo pop hit-maker. Four great singers, one starry night.