Remembering the original theme song from "Coolly High"

In the last days of the final cut for the movie "Coolly High", the theme song plays the most part of setting the movie's mood and the course of action.  The singer is the next most important person to a film's projection of the action.  In this case the singer was GC Cameron of the Spinners.  He was the lead singer of both songs.  The two finalists were 'It's So Hard To Say Goodbye To Yesterday" and the current champion "The Night Before".  

"The Night Before" was written and produced by RG Ingersoll and Lee Rogers.  The other one, it doesn't matter for this story.