I love my Gleichweit clarinet mouthpieces! They produce a lovely sound with power and beautiful color. The response across all registers are easy and even. There is a wonderful flexibility in these mouthpieces that makes me feel right at home with any music I play, from Mozart to Poulenc, to Isang Yun. Playing on Gleichweit mouthpieces has enabled me to focus more on music making and less on reed headaches.