"Plah Plah Pli Plah documents the sounds, performance and material of Knowles' handmade paper and dried bean instrument 'Bean Turners.' It includes transcriptions of the instruments' sounds, images of Knowles performing, scores, and a 'bean page instrument,' fabricated especially for this project at the Columbia College Chicago Center for Book and Paper Arts"--Publisher's website, viewed on September 22, 2014.