On The Sunday Of Life is the debut album of English progressive rock band Porcupine Tree, first released in July, 1991. It compiles tracks that Steven Wilson produced and recorded for two cassette-only releases, Tarquin's Seaweed Farm (1989) and The Nostalgia Factory (1990). This first real album contained a lot of peculiar material, but also tracks that would grow to be among the group's classic songs (particularly "Radioactive Toy"). Most of the lyrics were written by Alan Duffy, a school friend with whom Steven Wilson had lost touch a few years before the album was released.