hello chaps i bought a trumpet a couple of weeks ago and have been messing about with it since. on a good day i can do bottom F# to high C and am playing though a few tunes to get a feel for it - easy melodies like 'all blues'. anyhow, the thing that is frustrating me is that my lips go after about 1/2 an hour - especially if i am trying to regularly hit notes above the staff. i have been a guitar player for nearly 30 years and have professional-level theory/practice skills (jazz & classical) and also have taught the instrument and music theory. i know trumpeter's lips can go (when i was studying the jazz group tutor was a trumpet player and he taught us the limitations of the player/instrument for when we were writing for it), but how long does it take before i will be able to practice for a good 2 hours +? i am used to practicing for around 6 hours when i was seriously playing guitar and it would be nice to be able to get some hours in on the horn! and are there any exercises to develop lip strenght? cheers fellas!