.5: The Gray Chapter is the fifth studio album by SLIPKNOT. It is the first album by the band in six years and the first to not feature bassist Paul Gray and drummer Joey Jordison after the former died in 2010 (the title of the album being a reference to his name), and the latter parted ways with the band in 2013.
 
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DISCOGRAPHY:

Slipknot (1999)
Iowa (2001)
Vol. 3: (The Subliminal Verses) (2004)
All Hope Is Gone (2008)
.5: The Gray Chapter (2014)