Porcupine Tree drummer Gavin Harrison has released a new book that he co-authored with Terry Branum titled Rhythmic Composition: Featuring the Music of Porcupine Tree. The book contains twenty highly detailed transcriptions by Terry Branam and in-depth commentary from Gavin, along with over 40 great photos and a foreword by Neil Peart. The book is now shipping and can be ordered at this location. Thanks to Eric at Power Windows for the heads up.