Geophone (musical instrument) Geophone (musical instrument) The geophone is a percussion instrument, invented by the French composer Olivier Messiaen for use in his large composition for piano and orchestra entitled "Des canyons aux étoiles…" ("From the canyons to the stars…"). It consists of a drum filled with thousands of small lead pellets, and is played by swirling it around slowly so that the noise of the pellets resembles the sound of dry shifting earth. Messiaen commissioned a Parisian instrument maker to construct one to his design, and he carried this instrument worldwide to early performances of the piece (which was given its first
Kay Musical Instrument Company skilled craftsmen using special ordered machinery. They even had a hot stamping machine that could emboss the trademark KAY cursive script. After the dissolve of Kay/Valco in 1968, the Engelhardt-Link company bought the upright bass and cello lines at the asset auction in 1969, and continue to produce the same instrument lines till today. Manufactured in Elk Grove Village, Illinois, Engelhardt basses and cellos are sturdy instruments, widely used by students and touring professionals. The "ES9 Swingmaster" bass (formerly the Kay "S9 Swingmaster"), is highly thought-of by jazz, swing, and bluegrass musicians. Kay Musical Instrument Company Kay Musical Instrument Company