Looks fine to me (linux system with firefox, if it matters).
I’m pretty sure I’ve heard that tune before though.
Seriously, sound and video were both fine. If you are testing out recording yourself playing I would recommend aiming the camera a bit lower so we see more clarinet and less ceiling. Just my 2 cents.
Since this seems to have been resolved – and since we ordinarily treat “watch my YouTube video” posts as spam [though that is clearly not the case here] – I’m going to close this thread.