Porcupine Tree is a British progressive rock band. Their albums include Signify, Lightbulb Sun, and In Absentia. The band has released several popular songs, including Deadwing from the album of the same name, Shallow, and Trains. They also released Fear of a Blank Planet. Porcupine Tree is featured in the documentary Porcupine Tree: Closure/Continuation. Live. Amsterdam 07/11/22. The band released the album Closure/Continuation in 2022.