Lady Gaga and Tony Bennett have taken their last bow together.The iconic duo took the stage for one spectacular night to perform stripped-back versions of their duets and solo songs from their second joint album,, in The special, which aired on Thursday, marked their final televised performance together.Filmed earlier this year in front of an intimate audience in New York City, the legendary 95-year-old artist and star were a class act as they performed «Love For Sale,» «Night And Day» and «I've