Flea Market Music Market Music has published a wide variety of ukulele instructional books (distributed by the Hal Leonard Corporation) and DVDs as well as CDs of recorded ukulele music. To date over 600,000 books have been sold. The company's products are sold through retail and on line. Beloff and his wife, Liz, perform and give workshops at festivals and other musical events to promote ukuleles and the Flea Market Music products. In 2014 they were guests on a WNPR radio show with ukulelist Jake Shimabukuro, discussing ukuleles and ukulele music. Flea Market Music Flea Market Music is an American company which publishes
Geophone (musical instrument) performance in New York City). Messiaen's wife, Yvonne Loriod, commented that when she and the composer first collected the new instrument from the maker in her car it made a "splendid crescendo" whenever they went round a corner. Messiaen also included the instrument in his only opera, "Saint François d'Assise", which was first performed in Paris 1983. Other works that use the geophone include "Asyla" by Thomas Adès, "…towards a Pure Land" by Jonathan Harvey, and the operas "The Sacrifice" by James MacMillan and "Dark Sisters" by Nico Muhly. Geophone (musical instrument) The geophone is a percussion instrument, invented by