I use this mouthpiece in symphony and chamber orchestra.very interesting material,warm sound,good staccato,good focus and easy to play intervals through the registers.for my taste this crystal mouthpiece should be more open-115 or 119, 108 is too narrow,crystal responses very well. I have noticed,that many crystal mouthpieces are not even table etc., my was too,that’s not a good thing,but luckily I made it even with sand paper (table) on a flat surface,otherwise it was not possible to play piano,but now it’s possible. my advice is if possible choose from many mouthpieces.