What does theo huxtable mean when he says "jammin on the one"?

Question

from the cosby show

Answer 1

Best Answer - Chosen by Voters

Yeah, he meant to start the music on the count of the first beat. Ready on 1, is more like it.

Answer 2

I think its a reference to music timing. The one beat. Like paul simon. But then again, I never did like Theo. Two Two Seven, now there was a show I could wrap my head around.