Knock Madness is the third studio album by American rapper Hopsin. It was released on November 24, 2013, by Funk Volume and distributed by EMPIRE. Hopsin has said that the overall vibe of the album is different from his previous album Raw and that he has said all he needs to about leaving Ruthless Records. The album contains guest appearances from rappers SwizZz, Dizzy Wright, Jarren Benton, and Tech N9ne, among others. Like its predecessors, the album's production was entirely handled by Hopsin himself. Knock Madness was supported by three singles, "Old Friend", "Hop Is Back", and "Rip Your Heart Out", the last of which features Tech N9ne. Hopsin also supported the album with the Fuck It Tour with Yelawolf and the Knock Madness Tour. Knock Madness was met with generally positive reviews from music critics. The album also peaked at number 76 on the US Billboard 200 and, as of December 2013, has sold 16,000 copies according to Nielsen SoundScan. Hopsin spoke about the album in an interview with HipHopDX on August 12, 2011, where he said that he was aiming to make the production quality of Knock Madness sound just as good, if not better, than his perception of Dr. Dre's upcoming album, Detox. He also stated that the album would have a "positive message" and that when people listen to the album he wants them to feel "inspired to be better in life". On January 20, 2012, he stated via his Twitter account that Knock Madness was his main priority in life. He later spoke on the ba