Abdominal Pressure - Trumpet High Note Technique

This is an old video about the technique that helped me the most in redeveloping my high register. EDIT: I probably should never have uploaded this video. I was a month or two into my embouchure shift when I filmed it and I'd worked on my upper register for all of a couple weeks. The learning curve wasn't as steep as it could have been, thanks to my use of abdominal pressure, but this is not a good recording. My sound is thin, and my slotting is way off. If you'd like a slightly better representation of my higher register visit my newer videos. Thank you.