New here so forgive me if this is in the wrong section, but i believe this is the correct one... Anyways I've been playing the trumpet for about 8 years and now i'm in a colegiate band as well. I've always had a pretty good range and stamina but lately it seems I can only play well for a shorter amount of time before my lips get really tired and my range just dies. I still practice pretty regularly although not every day (it is summer afterall and I've tried everything from different lip slurs to playing exercises recommened by other trumpet players in my Arbans but nothing seems to help. Any ideas? Thanks.