Rowuk is right, changing something too fast can be recipe for disaster. However, here is my tension story. it didn't seem to have any adverse affects on my playing. A couple weeks ago, I looked up Jim Manley on youtube and I saw a couple of videos where he explained his approach to trumpet. MAN! WAS I BLOWN AWAY!! Anyways, I took some of his Idea's and tweaked them a little. I decided to breath while thinking 'accordion'. All you do is pretend you're an accordion and expand sideways instead of just frontwards while you breath. It seems to help me take in just the right amount of air before playing. Also, I found THAT by moving my air through the horn before I play, relieve excess tension. Upon combining the two, I immediately noticed a large drop in tension and facility of playing, especially above high C. I thought that my results may have been just psychological, so I took it to school and tested it with one of my friends. He struggles greatly with excess tension in both the throat and chest area, but can still squeak out a pinchy E on a good day. While we sat, waiting for everybody to get ready to play, I explained the 'accordion' way of breathing and how I noticed moving air through the horn before I played got rid of excess tension. After we were done playing, an hour and a half later, he picked up his horn and tried it. He went alllllllll the way up to a G above high C and he looked completely relaxed. He was even looking around while playing, and as soon as he saw me, I noticed he had a look of question in his eyes that said: "Why in **** is this so easy?!?" My results didn't seem to only apply to myself after that. I decided to share my findings with a few of the freshman that were struggling with trumpet and after they tried it, they all saw an increase in both range and tone production, some more than others. I can't say it will work for you but it sure did work for us! Here's the links to the youtube videos of Jim Manley that led me to this: YouTube - Jim Manley - Approach to Air & Airmen of Note trumpets‏ YouTube - Jim Manley & Airmen of Note trumpets hang‏ YouTube - Manley on tone production.mov‏ best wishes to you! -Marcos H.