There’s a commercial for some laundry product (Clorox™, perhaps?) with a song from the Broadway musical Annie Get Your Gun being sung in the background. The woman sings “Anything you can do I can do better… I can do anything better than you.” Then the man sings “No you can’t!,” then the woman sings “Yes I can!” and so on.
I’m assuming that the actress singing that part on the commercial is the actress from the original production and not the recent revival. Reba McIntyre (or was it Bonnie Raitt?) was Annie in the recent revival (at least, for a while), and the actress on that commercial doesn’t sound like either of those two. In fact, the actress on that commercial sounds vaguely like Ethel Merman.