Mariah Carey and Nick Cannon interviewed with Barbara Walters for a “20/20″ special airing on Friday night (October 21), during which they focused on six-month-old twins Moroccan and Monroe.

Discussing her pregnancy, Carey said, “I don’t think I understood the enormity or the magnitude of what it really does to your body. It’s not just, oh you don’t look pretty and you have a bump.”

Also dishing about the little ones love for music, Mariah revealed, “They really respond to music,” adding that she cried while singing “Hero” to the little ones.

Cannon spoke of the importance that Monroe and Moroccan get schooled before deciding a career path, as he said, “I want to make sure we get education first. Society puts too much on entertainment and entertainers… They praise them like they’re royalty, especially in America, where it should really be about the teachers or, you know, the doctors.”

“I want them to be able to sing as beautifully as their mother. I want them to be able to play instruments and everything. But I want them like ….’Go get a Ph.D,’” Cannon add