The recording features the classic lineup of Steven Wilson, Colin Edwin, and Chris Maitland, along with guests Rick Edwards (percussion) and Markus Butler (harmonica).
Originally released in December 2001, Transmission IV was the final installment in a series of limited-edition releases exclusive to the band's information service subscribers. It is often considered the "holy grail" for fans of Porcupine Tree's early space rock era. transmissionivbyporcupinetree rar fixed
The Mystery of "Transmission IV by Porcupine Tree" and the "RAR Fixed" Phenomenon The recording features the classic lineup of Steven