I have been playing trumpet for 5 and a half years and have been on first chair all throughout school (currently doing unit 3 4 vce music)but i have no upper register. I cant hit a high c consistantly. The last 3-4 years i have been doing roughly 1 hr of practice a day and up to 3hrs in holidays. Will range come eventually or is my umbrochure not right for trumpet? Any advice is greatly appreciated!!