CPS1 IN THE WASHINGTON POST June 23, 2018June 22, 2018 by admin CPS1 and its inventor are part of the story behind the Archeophone Records EP, Charles Asbury: 4 Banjo Songs. https://www.washingtonpost.com/news/retropolis/wp/2018/06/24/a-musical-link-to-an-era-when-racism-was-part-of-the-tune/?noredirect=on&utm_term=.5880771290af