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Tony Bennett
Tony Bennett has teamed up with Lady Gaga in the past couple years for their Cheek to Cheek tour and collaborative music. Gaga also recently performed at the televised event for Bennett's 90th birthday. According to multiple reports, Bennett may have a small part in tonight's halftime show. He is said to be announcing Gaga's performance with a video message. We will have to wait and see. (Instagram/ItsTonyBennett)