It's an interesting experiment, but I honestly don't think that it will be popular how it's now set up. If you get all of the answers correct, all is well and good. I got 3 incorrect answers. When I point at the incorrect answers, it's hard to determine what was what. (If I point at "Songs written by Robert Johnson", the answer is Fourth Theme.) The results section has those pesky ???'s. If it were a multi-column matchable quiz, a player could at least see the correct answers at the conclusion of the quiz. Of course, multi-column matching quizzes have their own pesky space limitations. (If column sizes were adjustable in matching quizzes, that format would work.)
I have another idea. You could do a simple clickable quiz where the hints are the 3 songs and the answer section contains the correct themes that may or may not contain decoys. I think that's the way to go. I do like what you're going for.