Vivi had posted. While it was playing, Rowan started to dance. I grabbed my phone to record her in action, and after a second or two of staring at me, she again caught the groove, and started to "sing" along.
She loves to dance, with or without help, and will groove to anything from the Brandenberg Concerti to AC/DC to French pseudo-Zydeco to commercials and cell-phone ringtones. We played it again and two-stepped around the room. She tired herself out so much, she's down for a nap.
*Note: I proved what a geek I am in that I just spent five minutes trying to decide if it should be 'concertos' or 'concerti'. I went with the Italian, but do also have a good argument for the English version.