SLIDE TONE / COPPER BRASS / Full Set for French Horn NachtmusiK BRASS FACTORY original, handmade acoustic adjustment rings for trumpets. These primarily alter the acoustics and playing feel. They increase resonance, allowing the sound to carry to the back of the hall. The instrument's response improves, allowing for finer control. The sensation of hitting high notes becomes better, and it is effective in expanding the range and reducing misnotes. This is a new type of acoustic adjustment ring that is attached to the slide sections, such as the main tuning slide, instead of the conventional "mouthpiece ring" that fits on the mouthpiece. Used by Emmanuel Urso, Principal Solo Hornist of the Orchestra of Teatro alla Scala, Milan. A message from Mr. Urso is available on Instagram. https://www.instagram.com/reel/DFK9CM9s1dm/?utm_source=ig_web_copy_link&igsh=MzRlODBiNWFlZA== While many accessories are supervised by professionals, SLIDE TONE is a product that studies the resonance of materials from a scientific perspective, rather than relying on a professional's intuition. According to customer surveys, 95% of customers reported experiencing a change. For more details, please visit https://nachtmusik.theshop.jp/ *Please understand that the effects may vary from person to person due to the nature of the product.