Guitarist WALL MATTHEWS is the surviving member of experimental '70s collective, ENTOURAGE. Sampled by Four Tet, their name whispered in reverence through the decades, Entourage forged bold musical ideas on their two rare '70s Folkways LPs. Tompkins Square released Ceremony of Dreams: Studio Sessions and Outtakes, 1972-1977, in 2017 to wide acclaim. Spine River: The Guitar Music of Wall Matthews, 1967-1981 is a collection of unreleased or obscure music by the master guitarist. This volume will be released as a limited edition LP, along with four other digital volumes of Wall's music, chronologically mapping his career.