Musical Instruments

47 products, each exploded into a recursive bill of materials. Open one and keep clicking down to the bolts.

Accordion A piano accordion: bellows pump air past steel reeds while a treble keyboard and a Stradella bass board open the valves that voice them. 982 parts · 10 subsystems

Acoustic Guitar A steel-string dreadnought acoustic guitar with a spruce soundboard and X-braced body. 103 parts · 5 subsystems

Alto Saxophone A conical brass woodwind in E-flat: a single reed on the mouthpiece excites the air column, and around 23 pad-bearing keys open or close 25 tone holes to set the pitch. 240 parts · 7 subsystems

Autoharp A plucked-string instrument with a mechanical chord bar system that dampens unwanted strings, allowing single-hand chording. 238 parts · 7 subsystems

Banjo A five-string resonator banjo: steel strings drive a bridge standing on a tensioned Mylar head stretched over a bronze tone ring, with a resonator dish reflecting the sound forward. 132 parts · 6 subsystems

Bass Guitar A solid-body four-string electric bass: a bolt-on maple neck, magnetic pickups, and passive controls feeding an output jack. 92 parts · 10 subsystems

Bb Trumpet A lacquered Bb trumpet with three piston valves, tuning slides, and a removable cup mouthpiece. 74 parts · 13 subsystems

Carillon A bell tower instrument with 23–77 bronze tuned bells struck by mechanically driven clappers, controlled by a baton keyboard. 419 parts · 7 subsystems

Celesta A keyboard percussion instrument with tuned steel plates struck by hammers, producing bright bell-like tones. 421 parts · 6 subsystems

Cello A full-size acoustic cello: a carved spruce-and-maple body, an ebony-faced neck, four strings, and an adjustable endpin. 54 parts · 8 subsystems

Clarinet A single-reed woodwind in B-flat with a cylindrical bore, sounding through a beating cane reed and overblowing at the twelfth thanks to its closed-pipe acoustics. 67 parts · 5 subsystems

Concert Flute A Boehm-system transverse flute in C: an air jet across the embouchure hole drives a 19 mm cylindrical bore whose 16 tone holes are valved by interlinked keys. 185 parts · 6 subsystems

Concert Pedal Harp A 47-string pedal harp with tuning pins in the neck and a seven-pedal mechanism that changes string pitch via rods and discs to enable rapid key changes. 39 parts · 8 subsystems

Concert Pedal Harp A 47-string concert harp whose seven foot pedals rotate disc forks in the neck to shorten each string by a semitone, giving a fully chromatic range from a diatonic string set. 554 parts · 7 subsystems

Concertina A free-reed aerophone with a hexagonal or square bellows, button keyboard, and internal reed chambers producing pitched melody and bass notes. 241 parts · 6 subsystems

Diatonic Harmonica A ten-hole Richter-tuned free-reed instrument: breath through each chamber drives one of two brass reeds, blow or draw, giving twenty notes from a 10 cm body. 74 parts · 6 subsystems

Digital Piano An 88-key digital piano with a graded hammer action, sampled sound engine and built-in amplified speakers. 689 parts · 12 subsystems

DJ Controller A two-deck USB DJ controller with motorized-feel jog wheels, a built-in 24-bit audio interface, channel mixer and performance pad grid. 179 parts · 12 subsystems

Drum Kit A five-piece acoustic drum kit: bass drum, snare, two rack toms, floor tom, cymbals, and supporting hardware. 226 parts · 12 subsystems

Electric Guitar A solid-body electric guitar with three single-coil pickups and a tremolo bridge. 133 parts · 6 subsystems

Electronic Drum Kit A digital drum set: mesh-head pads and cymbal triggers feeding a sound module that plays sampled drum sounds, all mounted on a folding rack. 336 parts · 11 subsystems

Erhu A two-stringed vertical bowed fiddle with a resonator and skin face, where the bow passes between the strings, played without fingerboard or frets. 29 parts · 6 subsystems

French Horn A coiled brass instrument with about 3.7 m of mostly conical tubing (double horn in F/B-flat), played left-handed through rotary valves with the right hand in the bell. 67 parts · 6 subsystems

Glass Armonica A friction-driven instrument with nested glass bowls on a rotating spindle, played by touching the rims with moistened fingertips. 81 parts · 6 subsystems

Glockenspiel A percussion instrument consisting of tuned steel bars mounted on a frame with individual resonator tubes underneath, struck with mallets to produce bright metallic pitches. 142 parts · 5 subsystems

Great Highland Bagpipes A woodwind instrument consisting of a leather bag, four reeded pipes (one chanter and three drones), and a blowpipe, producing melodic and harmonic sound by forcing air through the reeds. 69 parts · 6 subsystems

Handpan A percussion instrument made from two hydroformed steel hemispheres with tuned note fields, played by striking with hands and mallets. 28 parts · 6 subsystems

Harpsichord A plucked-string keyboard instrument with jacks containing plectra that pluck strings when keys are pressed, with multiple registers for tonal variety. 617 parts · 8 subsystems

Hurdy-Gurdy A mechanical string instrument driven by a hand-crank-turned rosined wheel that vibrates melody and drone strings, with a keyboard selecting pitches. 100 parts · 7 subsystems

Kalimba A plucked percussive instrument with metal or bamboo tines mounted on a bridge on a wooden resonator, played by thumb-striking to produce melodic pitches. 41 parts · 5 subsystems

Mandolin An eight-string instrument tuned in four unison pairs (G3-D4-A4-E5), with a carved arched top and back that work like a violin body under a floating bridge. 95 parts · 7 subsystems

Marimba A pitched mallet percussion instrument: tuned wooden bars suspended over resonator tubes on a wheeled height-adjustable frame. 381 parts · 8 subsystems

Mellotron An electromechanical keyboard instrument replaying tape loops of orchestral instruments via pinch rollers and playback heads, triggered by keys. 485 parts · 8 subsystems

Nyckelharpa A Swedish bowed string instrument with wooden keys pressing tangents against strings, providing drone and sympathetic resonance. 76 parts · 8 subsystems

Oboe A double-reed woodwind in C with a narrow conical bore, sounded by two beating cane blades and carrying the most mechanically complex keywork of the standard woodwinds. 99 parts · 4 subsystems

Pipe Organ A keyboard wind instrument in which pressurized air from a blower is admitted through valves in a windchest to ranks of tuned flue and reed pipes, selected by stops at the console. 12,901 parts · 8 subsystems

Portative Pipe Organ A portable medieval and renaissance pipe organ with 12–24 flue pipes mounted on a windchest, driven by dual bellows and controlled by a small keyboard. 67 parts · 6 subsystems

Sitar A plucked stringed instrument with a hollow gourd resonator, long fretted neck, and multiple main and sympathetic strings, producing resonant tones with microtonal slides. 94 parts · 7 subsystems

Steelpan A pitched percussion instrument made from a flattened steel drum (barrel) with a sunken playing surface and individual note areas, struck with mallets to produce melody and harmony. 57 parts · 7 subsystems

Studio Condenser Microphone Large-diaphragm side-address condenser microphone: a gold-sputtered Mylar capsule, internal impedance-converter electronics with output transformer, multi-pattern/pad/HPF switching, a wire-mesh headbasket, and an elastic-suspension shock mount with pop filter in a carry case. 98 parts · 12 subsystems

Synthesizer A 61-key analog/digital keyboard synthesizer with velocity-sensitive keys, DSP voice engine and an LCD control panel. 425 parts · 10 subsystems

Tabla Set A percussion pair of tuned hand drums — the dayan (treble, wood) and bayan (bass, metal) — with tensioned heads and tuning blocks, played with bare hands to produce pitched rhythmic patterns. 31 parts · 6 subsystems

Theremin An electronic instrument played without touch: hand capacitance near two antennas detunes heterodyne oscillators to control pitch and volume continuously. 47 parts · 7 subsystems

Timpani A pedal-tuned kettledrum: a mylar head stretched over a copper bowl, tensioned uniformly by a counterhoop and retuned across a sixth by a foot pedal. 83 parts · 7 subsystems

Tuba The largest and lowest of the brass instruments, with about 5.5 m of wide conical tubing (BB-flat contrabass) coiled upright, played through piston or rotary valves. 80 parts · 6 subsystems

Ukulele A four-string fretted instrument of Hawaiian origin, tuned G4-C4-E4-A4, with a small hollow wooden body and nylon or fluorocarbon strings. 71 parts · 6 subsystems

Violin A full-size acoustic violin with bow, built from carved tonewoods and fitted with four strings. 47 parts · 9 subsystems