Mazzeo System Clarinet in B-flat by Henri Selmer, Paris, 1963/1967 NMM 5831. Clarinet in B-flat by Henri Selmer, Paris, 1963 (top joint), 1967 (bottom joint).  Rosario Mazzeo Collection, 1995. Twenty German-silver keys, five German-silver rings, one German-silver plateau key. Modified Mazzeo system with custom modifications designed by Mazzeo ca. 1968. Modifications include: elongated register key; elongated left-hand g-sharp' key; brass plate attached to left-hand thumb plateau key; extra right-hand side key with overlapping extensions on other right hand side keys; c-sharp'/g-sharp'' key extension that is operated with right hand. Rosario Mazzeo's U.S. patent #2,867,146 (1959). National Music Museum The University of South Dakota 414 East Clark Street Vermillion, SD   57069 ©National Music Museum, 2003 Most recent update:   May 6, 2003 You are the 3,723rd visitor to this page since May 14, 2002. College of Fine Arts The University of South Dakota Return to Top of Page