I'm going to nominate myself. I'm also pretty much copying/pasting this from another thread.
When I was eleven or twelve, I watched an episode of Scientific American Frontiers which featured a program called "HyperScore". I was quite intrigued, and downloaded the software, which was, at the time, free. There were only two instruments available: strings and pizzicato, so my choices of genre were pretty much confined to "orchestral". I started composing songs with the aid of the program's harmony assistance, which automatically adjusted my notes to make them harmonize. It was great fun for awhile, but I eventually lost interest.
A year or two later (2006), after buying a new computer, I got a hankering to compose something with HyperScore, but found that the site which had previously hosted the software had closed. A new company had bought the program, and had created a new site to go along with it called H-Lounge, which allowed users to share their creations. On this site, I got my very first taste of audio sharing, and managed to ween myself off of the program's harmony assistance.
The goal of the site was to sell the MIDI compositions its inhabitants created as cell-phone ring-tones for two bucks a pop. Unfortunately, the site was founded around the dawn of MP3 ring-tones, so it flopped (and two bucks for a MIDI ring-tone was overpriced anyway).
Things just moved forward from there. I didn't share my music after H-Lounge closed (the site's still there to this day, but you can't upload anything), but I continued to mess around with that program. I eventually made friends with a fellow music enthusiast, who introduced me to electronic music and FL. (I now use FL8.) I've mostly kept my latest music to myself, but I'm beginning to upload my music here and on FurAffinity.net. I don't plan to upload any of my older compositions, but as I make new songs, I will upload them.