Compilation album by the English post-punk band, originally released in 1988. 'Substance' compiles the four singles released by the band that did not appear on albums - 'Transmission', 'Komakino', 'Love Will Tear Us Apart', and 'Atmosphere' - as well as most of their B-sides. It also collects tracks released on various EPs, namely the band's first release, 'An Ideal for Living', and two samplers issued by Factory Records, 'A Factory Sample' and 'Earcom 2: Contradiction'.