Halim Abdul Messieh El-Dabh was an Egyptian-American composer, musician, ethnomusicologist, and educator, who had a career spanning six decades. He is particularly known as an early pioneer of electronic music. In 1944 he composed one of the earliest known works of tape music, or musique concrète. From the late 1950s to early 1960s he produced influential work at the Columbia-Princeton Electronic Music Center.
Halim El-Dabh at a Cleveland festival in 2009
Electronic music broadly is a group of music genres that employ electronic musical instruments, circuitry-based music technology and software, or general-purpose electronics in its creation. It includes both music made using electronic and electromechanical means. Pure electronic instruments depended entirely on circuitry-based sound generation, for instance using devices such as an electronic oscillator, theremin, or synthesizer. Electromechanical instruments can have mechanical parts such as strings, hammers, and electric elements including magnetic pickups, power amplifiers and loudspeakers. Such electromechanical devices include the telharmonium, Hammond organ, electric piano and electric guitar.
Front page of Scientific American in 1907, demonstrating the size, operation, and popularity of the Telharmonium
Leon Theremin demonstrating the theremin in 1927
Phonogene (1953), a tape machine for modifying the sound structure, developed by Pierre Schaeffer et al. at GRMC
Pierre Schaeffer presenting the Acousmonium (1974) that consisted of 80 loudspeakers for tape playback, at GRM