Woodwinds need not be wood—reeds and edges decide
Call them woodwinds and many still imagine maple tubes, yet gold flutes and brass saxophones belong for how they speak. Sound either splits on a sharp edge—open transverse flutes, panpipes, shakuhachi, or closed recorders and ocarinas—or couples one or two vibrating reeds to the air column, as clarinets, oboes, and crumhorns do.
Open flutes demand a directed airstream across an edge that splits flow and sings the tube; ancient makers used bamboo and hollow branches, later tin, copper, or bronze, and modern concert alloys of nickel, silver, copper, or gold. Closed flutes channel breath through a duct to the edge. Single reeds clamp to a mouthpiece with a ligature so air between reed and tip starts the column—clarinet and saxophone territory. Double reeds bind two cane slips; estimates place the idea in mid-to-late Neolithic winds through split rushes. Exposed doubles (oboe, cor anglais, bassoon, shawms) sit between the lips; capped doubles such as the crumhorn hide the reed under a windcap.
Bagpipes use multiple reeds yet behave like capped systems because lips never touch the blades. Free-reed aerophones—harmonica breath or accordion bellows—vibrate metal tongues in a frame and sit adjacent in the conversation. Despite the family name, materials range through brass, silver, cane, gold, platinum, and earthen ocarina clay. Orchestras typically field flutes, oboes, clarinets, and bassoons, adding piccolo, cor anglais, bass clarinet, E-flat clarinet, contrabassoon, and occasional saxophones.
Concert bands enlarge that palette: piccolos, flutes, oboes, B-flat clarinets, bass clarinets, bassoons, and alto, tenor, and baritone saxophones as staples, sometimes alto or bass flutes, cor anglais, E-flat and alto clarinets, contrabass clarinet, contrabassoon, and soprano or bass saxophones. The shared trait is not timber of the tube but the edge or reed that sets air moving—why a golden flute still counts as woodwind.
Source: Woodwind instrument
