Review as I listen...
Sunny start. Lots of background popping. Nice Bass. Too sudden change. Holy crap... This is actually REALLY cool! Nice bass. I really like. It's funny. But there was too much popping in the background. The only reason you lost 1 point. Oh, and that transition first little transition between sounds. The second was good.
Overall, It was good, but work on your transitions, and make sure you don't have a blank mike recording, or your mike might be giving that popping. Still, great job. Now listen to my theme song!