Amazing! Not only was he quick to respond, he was so polite and professional. He went out of his way to put a lot together because a funeral service at Arlington National Cemetery for a fallen Green Beret. Mr. O’Brien played for a long period of time while the Soldiers went through a long line of approximately 200 people to say their goodbyes to their teammate. It was impressive and I can’t imagine how that part of the service would have gone without his beautiful music. It was truly touching and his exit was remarkable as he played a last note as the last Soldier punched his crest into the casket and saluted. We highly recommend Mr. O’Brien and would use him again!