It's hard to categorise the Melvins, which is probably why they have been at turns both hugely influential yet also overlooked. From Seattle and formed in 1983, they have constantly shifted and shuffled through line-up changes and musical musings. Inspired by punk, hardcore, metal, avant-garde, cartoon and grand guignol, they have released a succession of infuriatingly incandescent albums, beginning with 1987's debut Gluey Porch Treatments.