An LP-only limited edition release from Koen on Thrill Jockey.

From the label’s website:

“In The Absence Of Gravity…” is a side-long piece based around a 2008 solo performance in Brighton. The technical set up was somewhat inspired by Terry Riley’s ‘time-lag accumulator’ pieces using a delay system where Holtkamp was constantly recording over himself in order to create a continuous and fluid overall sound. A friend sent him a recording of the performance and it encouraged Holtkamp to take a non-purist approach and combine the live recording with some of his more recent studio experimentations from the summer of 2010. The work is built mainly around processed acoustic guitar, analog synthesizers, and electronics but also incorporates recordings of harmonica, electric organ, small percussion objects, and an unlikely glass of ginger ale.