Clarinet. Nominal pitch: B♭.

Technical description: Stained boxwood with ivory ferrules and brass keywork. Five pieces: mouthpiece, barrel, upper section, lower section, bell. Tuning slide between upper section and barrel. Brass tube in thumb-hole. Throat A♭ key touchpiece for R1 and alternative L2. Two levers for L2 to trill throat A a semi tone or a tone. Additional L4 lever for B♮₃/F♯₅. Ingenious two R0keys for alternative fingering of F♯₃/C♯₅ and E₃/B₄. Instrument is pinned to strengthen it. 20keys. L0: T; speaker. L1: T; throat A♮; throat A♭. L2: T; alternative throat A♭; trills 1+2. L3: T; E♭₄/B♭₅. L4: C♯₄/G♯₅; E₃/B♮₄; F♯₃/C♯₅; alternative B♮₃/F♯₅; alternative G♯₃/E♭₅. R0: alternative E₃/B♮₄; alternative F♯₃/C♯₅. R1: T; side F₄/C₆; side trill key for throat A-B♮ and B♭-C. R2: T. R3: T; B♭₃/F♮₅; sidelong tailed B♮₃/F♯₅. R4: F₃/C₅; G♯₃/E♭₅. Keymount type: pillars and plates. Keyhead type: salt spoon