I also love the songs and way you love your cats, always makes me smile!
I sing to my cats too and I think they really like the interaction.
I really feel sad when you see people who have pets and they have no interaction with them, they treat them like a pet not a seperate entity with a personality, like they're a cushion or something!
They are so lucky getting steak, I can't afford steak for myself and my boyfriend let alone Jack & Sunny! lol