Hi. I have read the forum for about a month but this is my first post. Just seeking some advice - sorry I am not able to contribute positively to the forum yet but we are new to this. My son (age 9) has the use of only the right arm - his left arm has no shoulder bone and no hand or elbow movement at all. He would like to join band next year and trumpet/cornet seems like a good option. After reading this forum, we purchased a Yamaha 2310II cornet for him to start on. It is new - a "scratch-and-dent" from musiciansfriend - and was $380 (I know they are cheaper used but we dont play so were worried about evaluating a used one and were willing to pay more for the right to return it). We can still return it as of now. Can anyone tell me whether that would be a good starter instrument for someone with one arm - - both in how it plays and in weight or ergonomics? Also, I read some posts about the Shulman system - - would that be a good thing to have for a person who is one-handed but has no left shoulder? If it would and anyone has one they are looking to sell, please let me know. I really appreciate any help you can give. Thanks.