Music for cats

Just when you think you've seen, or heard, it all, along comes something completely different. Some cats are pretty quiet.  Some cats are quite talky, yacky, and chatty. Some cats seem to chirp. Some seem a bit whiny and pleading, especially in the morning before breakfast. Slow old humans.  But never thought of any of our cats as being musical.  So here it is, music for cats.  Now that I think of it, one of ours hums Cosmo's air frequently.