Crazy things. My wife and I have two inside cats. When they were kittens I would take them into their bedroom at 10 p.m. each night and close the door. Their bedroom is our sunroom, a large, airy place where they can't get into trouble when we are asleep. The routine was to take some cat treats in, have them sit up on their hind legs and feed the treats to them. For some reason I started singing to them (captive audience?). Before long, all I had to do around ten pm was break out in song and the two cats would race helter-skelter to their room, sit up and wait for their treats. This has been going on for more than two years. I'm not sure what songs they prefer, since they react to anything I can come up with! My son sometimes calls at ten to watch the show on FaceTime.