I`ve been playing the piano for 17 years, but for the last 7 i have only been playing on my own for fun due to what feels like repetitive stress syndrome or something. I wanted to get my degree in classical piano performance, but alas, couldn`t. its still bothering me, but i HAVE to go back into music. I`m taking lessons, but my music college wants me to learn another orchestral instrument as well, something that won`t aggravate my right arm tendonitis in my upper forearm and upper shoulder. Can any other piano players recommend an instrument that doesn`t push/aggravate the "piano muscles?" I`d really appreciate the help, thank you!!!!!