- ^ "The stuff of electronic music is electrically produced or modified sounds. ... two basic definitions will help put some of the historical discussion in its place: purely electronic music versus electroacoustic music" (Holmes 2002，第6页).
- ^ "Electroacoustic music uses electronics to modify sounds from the natural world. The entire spectrum of worldly sounds provides the source material for this music. This is the domain of microphones, tape recorders and digital samplers…can be associated with live or recorded music. During live performances, natural sounds are modified in real time using electronics. The source of the sound can be anything from ambient noise to live musicians playing conventional instruments" (Holmes 2002，第8页).
- ^ "Electronically produced music is part of the mainstream of popular culture. Musical concepts that were once considered radical—the use of environmental sounds, ambient music, turntable music, digital sampling, computer music, the electronic modification of acoustic sounds, and music made from fragments of speech-have now been subsumed by many kinds of popular music. Record store genres including new age, rap, hip-hop, electronica, techno, jazz, and popular song all rely heavily on production values and techniques that originated with classic electronic music" (Holmes 2002，第1页). "By the 1990s, electronic music had penetrated every corner of musical life. It extended from ethereal sound-waves played by esoteric experimenters to the thumping syncopation that accompanies every pop record" (Lebrecht 1996，第106页).