Tony Bennett has told Billboard that he's going to record an album of jazz duets with Lady Gaga after he finishes work on Viva Duets and she releases her upcoming record ARTPOP. "It's going to really reaffirm that she's one of the best jazz singers that anyone's ever heard," says Bennett. He first sang with Gaga on a version of "The Lady Is A Tramp" that came out on his record Duets II last year. They're currently in the process of selecting songs and will work with arranger/orchestrator Marion Evan on the album recording.
Gaga has showed off her jazz vocal chops in concert over the past few years. Here's her take on the standard "Orange Colored Sky" at Radio 1's Big Weekend in England last year...
...and here's a jazzy rendition of "White Christmas" from her A Very Gaga Thanksgiving special last year.