Notably, Wendy Carlos was originally known as Walter Carlos and underwent a
sex change operation during the late 1960's. Wendy was a still known as Walter during his work with
Robert Moog in the mid sixties, but had become Wendy by the time of
Switched-On Bach.
Compare the early photo at www.obsolete.com/120_years/machines/moog/index.html to the later stuff at www.wendycarlos.com