Well, here goes:

My current male cat was adopted and had the (God, help me, AWFUL) name of "Bobo" when I got him. I don't mean to offend anyone, but I just couldn't keep that name. His is now officially -- D'Artagnon! However, since the latest "Star Wars" episode, he is also, D'Ar D'Ar Binks. Then, he's been called "Chunk o' Cheese" (he's a bit of a porker) and "Fat Boy". Actually, he's quite muscular now but will always be a big boy.

My calico is named Monocle because she has a gray spot around her right eye. Of, course, that evolved to "Mono", which then evolved to "Monkey" (Mono is Spanish for monkey) and "Monkey-bug".

We used to have a cat (f) that earned her name of "Miss Hissy Fit" and was generally called "Hiss".

Of course, all have received the occasional appelation of "S***head" when appropriate.

I don't sing specific songs to them, those are generally reserved for the dogs, but I do do the baby talk thing -- alas and alack -- I'm a normal (pet lovin') human!!