Yeah, seems people either are not good at lyrics or they don't know 80s hits or possibly both. It might just be the 80s hits, so I could try to narrow it down a bit so that perhaps it's genre specific and possibly from another decade or I'll try a new quiz-form altogether ..
But not until someone answers them!
I think they're all a breeze. It's easy for me to say since I made them, though.
edit :
Looked'em over and while some are perhaps a bit hard, I feel I can say with relative certainty that at least 90% of the users here should've heard song 3 and song 10 - likely several times.