Deadwing is the eighth studio album by British progressive rock band Porcupine Tree, first released on March 28, 2005. It quickly became the band's best selling album to date (though was later surpassed by Fear of a Blank Planet). The album is based on a screenplay written by Steven Wilson and Mike Bennion, and is essentially a ghost story. Given its narrative, most fans have dubbed this a concept album. Wilson has expressed the intention to eventually have this film script made into a movie. The album includes collaborations with King Crimson's Adrian Belew (who plays guitar solos on tracks 1 and 4), and Opeth's Mikael Åkerfeldt (who adds vocal harmonies on tracks 1, 3 and 5, as well as the second guitar solo on track 5). The complete concept and story has never been entirely announced by the band, and this is likely due to Wilson's intentions of attempting to turn this into a movie, and not wanting to spoil any portions of the story. Some fans have speculated at the plot based on extensive listening to the album, though there has been no official statement regarding its true meaning. Wilson said it is a surreal "ghost story," and "the idea's ultimately that this album will form a kind of companion with the feature film." He stated that David Lynch and Stanley Kubrick were major influences for the filmscript. On September 1, 2006, Steven Wilson announced in his blog that Mike Bennion (Co-writer of the Deadwing screenplay) had released the first fifteen pages of the story