Clarinet. Nominal pitch: A.

Technical description: Cocus wood with german silver ferrules and keywork. Five pieces: mouthpiece, barrel, upper section, lower section, bell. Zig-zag speaker, corresponding with first ring, with chimney on left side of the instrument. German silver tube in thumb-hole. Alternative F₄/C₆ for L3 and L2. Alternative R1 lever for E♭₄/B♭₅. Alternative R0 lever for G♯₃/E♭₅. End pivoted F₃/C₅. Was 16keys, now 15, 4rings, 4rollers. L0: T; speaker corresponding with first ring. L1: T + ring + vent; throat A♮; throat A♭. L2: T + ring + vent; alternative cross key for F₄/C₆. L3: T; E♭₄/B♭₅; alternative side key for F₄/C₆. L4: C♯₄/G♯₅; E₃/B♮₄; F♯₃/C♯₅. R0: Alternative lever for G♯₃/E♭₅ [missing]. R1: T; side F₄/C₆; side E♭₄/B♭₅; side trill key for throat G♯-A or C₆-D₆; side trill for throat A-B♮ and B♭-C; alternative touchpiece for C♯₄/G♯₅. R2: T + ring + vent. R3: T + ring (forked B♭₃/F♮₅); cross B♭₃/F♮₅. R4: G♯₃/E♭₅; F₃/C₅. Keymount type: screwed in pillars. Keyhead type: modern.