Reed contrabass. Nominal pitch: E♭.

Technical description: Brass body, keywork and crook; body folded in five sections; wide crook tip; holes are almost as wide as the bore so that only one at a time need be opened, since no further venting is required; with water-key on crook and music card-holder fitting. L0: D; E?; F; speaker. L1: C; B? (or for L2). L2: B? (or for L3). L3: A (or for L4), L4: G?. R0: F?; G. R1: C?; D (or for R2). R2: D? (or for R3). R3: E (or for R4). R4: F?.Technical description: Brass body, keywork and crook; body folded in five sections; wide crook tip; holes are almost as wide as the bore so that only one at a time need be opened, since no further venting is required; with water-key on crook and music card-holder fitting. L0: D; E♮; F; speaker. L1: C; B♮ (or for L2). L2: B♭ (or for L3). L3: A (or for L4), L4: G♯. R0: F♯; G. R1: C♯; D (or for R2). R2: D♯ (or for R3). R3: E (or for R4). R4: F♮.