If I could hear the tunes, I might get an idea for a serious name. I try to get a feeling for what the tune makes me imagine. This is very hard to do with no idea of what a tune sounds like, not to mention whether it's a jig, reel, etc.
"Flying Without Wings" was serious, but I'm not entirely sure someone already hasn't come up with a tune by that name. "Up For Air" isn't that wacky. Hey, if I can name a tune "Farewell to Reason," what do you expect?