In 2004, Mr. Scruff released "Keep It Solid Steel Volume 1", the first of what is intended to be a series of several DJ-mixed compilation CDs for Ninja Tune's Solid Steel series of artist mixes. These mixes are designed to recreate the eclectic genres one would expect to hear at a Mr. Scruff club night. In November 2006, Ninja Tune confirmed that the 8th Solid Steel record would be mixed by J Rocc and the 9th would be Volume 2 from Mr. Scruff. Other Solid Steel mixes have been released by fellow Ninja Tune artists including The Herbaliser, Hexstatic, DJ Food and Amon Tobin.