Thommo

Thanks ... Nice to know I'm not alone buzzing in the car!
I started off using the mouthpiece, but I drive an old car on bumpy roads and found that I was using more pressure than I normally would use just to keep a sraight note.
My free buzzing very quickly improved. I started by "setting" my embrouchre on the mouth piece, mainly to get my tongue in the right position. (I found I had been pushing behind the botton lip)... then taking ithe mp away and free buzzing. Having done 2 hours yesterday and a lot on other days this week, my lips feel full and strong.

I have a concert in 4 hours. At the moment my sound is good. As for endurance.. I'll guess I'll soon find out!!