The ERG-Oboe playing support is specially designed to enable the player to keep their hands and upper body completely relaxed. It works with the oboe, oboe d’amore and English horn. However, the instrument needs to have a vertical neck strap ring above the thumb rest. You need will attach the playing support to this ring. If in your instrument is no neck strap ring, then your instrument repair shop can easily attach a new thumb rest with a vertical neck strap ring on it.