If they've just given you ideas, no problem. There are only so many basic plots to choose from - see
http://www.ipl.org/div/farq/plotFARQ.html for specific kinds.
The only copyright issue I can think of with Gord's songs are either using the music itself, or more than a few words of any lyrics; then you'd need permission. Even titles can be used. You wouldn't believe, for example, how many books have the exact same title but there's no copyright violation. The English language only has so many words to be used in so many combinations.