„For many years, I have been playing (exclusively) mouthpieces by Johannes Gleichweit. Thanks to the incredible precision of the facings and the careful selection of materials, it has become much easier for us clarinetists to realize our tonal concepts. The response and smoothness of the tone benefit wind musicians just as much as music students, university students, and professional musicians. I would like to take this opportunity to express my gratitude on behalf of many and look forward to continuing our collaboration!“