I've already blogged about Gracie and Luke's obsession with the Slippery Fish song. Gracie dances to the music in her head. She doesn't need the music to play or anyone to sing. Good thing, until a few days ago, we didn't know the words.
You can bet we know them now!
By the way, the wavy arm thing is the "Octopus, Octopus, swimming in the water!" part.