Pop star Mariah Carey’s performance at the Milan Cortina Winter Olympics opening ceremony was the talk of the town but raised a few questions. The American singer’s rendition of Italian classic “Nel Blu Dipinto di Blu” or “Volare” was a showstopping highlight in Friday's spectacle that kicked off the Games. She received many rave reviews. But her performance also prompted a good deal of criticism online. Commenters were confused why an Italian singer wasn’t given the honor. Some noted a large teleprompter with a phonetic breakdown of the song’s Italian lyrics. Others wondered if she was lip-syncing.