In "Return To Tomorrow" during the scene where Kirk is supposedly dead in sickbay, there is a music score played in the background and I'm wondering if it was later used in another tv series, specifically "Cosmos" by Carl Sagan. Years ago, I came across an audio tape a friend of mine had that I believe had that theme, various scores from Cosmos, as well as a few others. I can only wish to remember the name of the tape now, but I wish I could find it or even confirm that the score from the Trek episode was on it. Any ideas?