I'm getting the same odd things with your audio, but this is a phenomenal audition! You've got a good "little kid" tone without being too sharp about it. I like the warmth and the fluxuation. My biggest note is to watch your mic technique. If you're getting louder, you'll want a little distance to manage peaks, but if you're getting quieter, you're hard to hear from a distance. Be careful about that mix.
If you'd like me to, I can also do a retake while keeping an eye on my volume!!