Douglas Kahn, »The Latest: Fluxus and Music«, in: In the spirit of fluxus:[Walker Art Center, Minneapolis, Minnesota February 14 - June 6, 1993 … Fundació Antoni Tàpies, Barcelona, November 17, 1994 - January 21, 1995], (eds.) Janet Jenkins, Elizabeth Armstrong, Joan Rothfuss (Minneapolis: Walker Art Center, 1993)

»I felt certain the butterfly made sounds, not only with the motion of its wings but also with the functioning of its body […] and unless one was going to dictate how loud or soft the sounds had to be before they could be allowed into the realm of music […] the butterfly piece was music.«

@incollection{Kahn.1993,
 author = {Kahn, Douglas},
 title = {The Latest: Fluxus and Music},
 pages = {100-121},
 publisher = {Walker Art Center},
 isbn = {093564041X},
 editor = {Jenkins, Janet and Armstrong, Elizabeth and Rothfuss, Joan},
 booktitle = {In the spirit of fluxus:[Walker Art Center, Minneapolis, Minnesota February 14 - June 6, 1993 … Fundació Antoni Tàpies, Barcelona, November 17, 1994 - January 21, 1995]},
 year = {1993},
 address = {Minneapolis}
}