Yeah, I'd finished one game for another jam in September. I also tried to make a platformer a while ago, and the art was very simple, and there wasn't sounds or music. I got ill and stopped working on it.
Beginner at programming? I've programmed some things that aren't games, including a function that could read and write numbers (like turn "two hundred and ninety-three" into "293" or vice-versa) in Danish, Spanish and English.
At art? I think I am a beginner at art, or at least was one when this jam started.
At music? I'm guessing not quite: I don't have fancy music equipment, but I do have a guitar that I've played for years. The only reason I made some music for this jam was another musician on our team got some real life stuff to deal with and suddenly we were really close to the deadline and didn't have music. If I weren't a beginner I probably couldn't have made music like this in a couple of minutes like I did. (Not that it's some really great music, but I don't think it's bad either. The audio quality isn't perfect though.)