I'm a sophomore in high school and this will be my 6th year playing trumpet. I have a decent range (a few notes above high C), and I'm told i have good tone. However, i can't play my "high" notes loud. I can play them, but not loud. Even when i play with my school's symphonic band and I have to hold a B just below high C i have to really work to get that to be heard well above the band. People talk about blasting high notes, but i can't even make myself do that. If it helps, i'm playing on a Jupiter JTR-1602 and Yamaha mouthpieces: 14B4 for symphonic and 14A4a for jazz. The higher notes are easier to play loud on the 14A4a but that might be the shallower cup.