It has long been known that male mice sing to attract female mice — a cross species technique. However, mice were previously viewed as . . . well . . . dumb. They were not believed to have the capacity for vocal learning. The next step is Mouse Menudo, though it appears that mice will actually have pitch.
Strangely, the scientists appear to have missed this demonstration in the movie “Babe.”
The Japanese are already developing a crooner mouse as we fall further behind the Lounge Mouse race: