Pierre Schaeffer T-Shirt

available at Analog Industries
image description via Wikipedia:
"Pierre Schaeffer working in his studio with an electronic instrument known as the phonogene; circa 1948."

See this Wikipedia article for more info on Pierre Schaeffer.
"Pierre Henri Marie Schaeffer (Pierre Schaeffer {{{2}}} (help·info); August 14, 1910 – August 19, 1995) was a French composer, writer, broadcaster, and engineer most widely recognized as the chief pioneer of musique concrète,[1] a unique form of experimental music that began in Europe during the mid-1900s."

Bottom image is of Delia Derbyshire, Analog Industries' previous T-Shirt run. You can find more info on Delia Derbyshire here on Wikipedia where you'll find the source of the image for the T. "Delia Derbyshire at the BBC Radiophonic Workshop" Of course be sure to see these previous posts including video.