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
Rimshot (broadcasting) "border blasters". These are primarily Mexican AM stations operating at very high power on clear channels to reach the American Southwest and beyond via skywave at night. In Canada, the CRTC restricts most same-market duopolies in television to channels broadcasting in different languages. Hence, English-language duopolies in major Canadian markets have involved stations licensed to rimshot major cities or serve different portions of a larger metropolitan area (such as Victoria for Vancouver, Hamilton and Barrie for Toronto, and Pembroke for Ottawa). Rimshot (broadcasting) A rimshot is a radio and television broadcasting term for a station that attempts to reach a