Mangled Demos from 1983 is a collection of various early Melvins recordings from 1983, remastered and released on Ipecac in 2005. Until 2005, none of the material, with the exception of the first version of "Forgotten Principles", had ever been officially released. A few tracks included in this album have previously appeared on bootleg releases. It is the only record featuring the original lineup (Buzz Osborne/Matt Lukin/Mike Dillard).