Joined new band recently. Learned to play on cornet progressing to front row before moving to euphonium and then Eb bass. After spell away at Uni and having family returned to a new band. No vacancies on larger instruments so back on last cornet. Hoping to progress and maybe end up on front row some day. Have sub'ed on occasion. I can play all day on last cornet as hardly get above D but I want to be able to do my self justice if asked to sub again. My lips fatigued often before end of set. Currently using Arban and other books to extend range and endurance. Is it really a case of playing more.