"Shallow" is a song by British progressive rock band Porcupine Tree, released in 2005 as the first single from the Deadwing album.
Background
This single was released in February 2005 exclusively in the United States for radio broadcast purposes. The song managed to enter the Billboard's Hot Mainstream Rock Tracks chart, peaking at #26, without the help of any music video.
A European version of the single was first intended but rejected at the last minute, even though it had already started being manufactured. The band and their management asked to destroy all copies but a few made their way to the surface and were sold at some German and Polish stores. The management quickly bought all the remaining copies and sold them (signed only) at the shows for 40 Euro.
"Shallow" was featured in the movie and on the soundtrack for the film Four Brothers in which credits Colin Edwin curiously appears as Colin Balch; he is also credited under this name in the manuscript book for Deadwing.