Gender Preferences

Theo and I had an interesting conversation this morning. He has lately been obsessed with the song "Mamma Mia" by ABBA, so we were listening to it for the millionth time when he remarked:

Theo: Mom, I like the boy ABBA singers better than the girl ABBA singers. [If you're not aware, ABBA consists of two male and two female singers.]
Me: Oh. Why?
Theo: Because I'm a boy, so I like the boy singers best.

I explained to him that regardless of being a boy, he can prefer either male or female singers, and I mentioned that Grandma Diane, who is a girl, prefers male singers. But what was more interesting to me was the fact that he even noticed that ABBA has two male singers—they harmonize pretty well, so it's not terribly apparent that it's two male singers in the male parts. He has such an ear for musical details!