You've got to hear this!  What do you think???

Lady Gaga is a self-professed fan of Broadway musicals, so when Tony Bennett called up the fame monster to record a track with him for his "Duets II" album, it was a perfect choice for the two to perform "The Lady Is a Tramp" from the 1937 musical "Babes in Arms."

We all know Gaga has no problem belting out a showstopping number, but we're surprised just how effortless the pop star sounds crooning this classic show tune. Hear their duet below.

via Hear Tony Bennett's duet with Lady Gaga - MSN Music News.