PBS theme 90's Do you know this song? Who sang it? Where to get it?

Question

In the mid to late 90's, in Tulsa Oklahoma, PBS played a song that was an advertisement for PBS or a PBS theme. It may have played at other times as well, like a station identification. In fact I think they might have played it when the station signed off. I think it was done by Rockapella or a group similar to them. It seems like it was inspirational or patriotic.
I already wrote to the station and did not recieve an answer.

Answer 1

I suggest that you try www.youtube.com