I have a brother that is 14 years old. hes is going into 9th grade this coming year. last year while he was in 8th grade he was 1st chair in his middle school band. i asked my band director last year if he could play in our school marching band and she said yes. he was very happy and improved his playing because he practiced more. its now summer and he just wont practice no matter what i tell him. i tell him that after nxt year hes going to have to be the leader of the trumpet section because my friend and i are graduating this year. he is (was) a very good player around may. he knows 6 scales, has a nice sound and can (used to be able to) his a solid high d. but he just wont practice now. hes gotten worse ever since he hasnt played. his sound has suffered, his range and endurance too. its pretty upsetting for me to hear him at this level because i know he is alot better than this. what should i do, or can i do get him to practice more?