Originally an analogue tape technique, now also used in digital processing, this term calls for a sound fragment to be played (read) from its end point back to the beginning.
Bibliography: Julien, Olivier (1999). Le magnétophone à bande analogique ou le premier multieffet
Küpper, Leo (2000). Le temps audio-numérique
Risset, Jean-Claude (1996b). Real-World Sounds and Simulacra in my Computer Music
Schrader, Barry (1982). Introduction to Electro-acoustic Music

