Thanks Windy for the help. Here is me attempting to play the overtones after releasing the register key. The high note just disappears. Bear in mind I haven't picked up the licorice stick in months so things have got a little sloppy, but I would like to get back into it, and would like to know where I'm going wrong, and why my clarinet is so hard to blow. Should it be free blowing? I understand there is meant to be some resistance, but how much is me and how much is the budget instrument?
Playing with a Yamaha 4C mpc with a Legere 2.5 reed.
https://youtube.com/shorts/ptXSXrucKTg?feature=share