@Mamamack: First things first: a lot of the "comments" you're getting are due to the recording quality of your song. I don't know what kind of microphone you used, but it was very crackly. For recording, I'd recommend using a (small-diaphragm) condenser microphone. If you ever plan on doing some recording again for fun and have a few extra dollars saved up, I bought mine for amateur home recording for $60 and it works great. Google "clarinet recording" and you can find out how best to "place" the microphones. From what I read, they should be placed near the finger holes.
Secondly, I don't know if you used a different instrument to record the background or not, but the lead clarinet sounded a bit out-of-tune (I have no idea how "tuning" woodwind instruments works). I also don't know what program you used to record, but you most definitely had clipping going on, which meant that at very loud volumes, the sound was becoming highly distorted. Most recording interfaces have live recording-level meters to prevent clipping for occuring. Usually this means you need to move the mic further away, or flip a volume -dB switch if your mic has one (or even play softer, as a last resort).
Thirdly, I liked your tune! The bass notes in the back were an nice touch to prevent it from being just a boring melody. However, you didn't do enough to SPICE IT UP (add some Mamamack personal flavor to it).
Ill try to say more about everyone else's song later.