Thank you for playing! I'm glad you liked it and I'm definitely taking notes on everyone's feedback, so thanks for those :)
As Zetsubou said, the music used were Creative Commons so I simply picked out songs that matched the scenes.
I added some illustrations I did outside the jam in the Extras section, specifically in the MISC gallery. But aside from those, everything in the actual story (art, writing, programming) were done during the jam. I do have experience making games and participating in game jams so that really helped me manage everything. And well, Zetsubou blasted through the script so I had to up my game as well.
But really, I was pretty much just working on it day and night. It was a fulfilling experience and I wouldn't have it any other way!