Now, I don't have the best singing voice around, but I'm not completely tone deaf. So why is it that Kacey hates to hear me sing?

I was fixing some lunch and singing "Sunrise, Sunset" (blame the "Fiddler on the Roof" thread in General for that ), when Kacey dashed into the kitchen and started circling anxiously and yowling. He always does this when I sing. I don't think he's trying to harmonize--instead, he seems to be concerned for my welfare.

Anyone else have a cat who thinks singing is evil?