J Mascis (b. 1965) is an American indie rock musician, songwriter, and producer. His genre-defying style has earned him a place among the greatest guitarists of all time. He has released music on labels such as Sub Pop, Warner Bros., and SST. Key albums include “Dinosaur Jr.” (1985), “Green Mind” (1991) and “Several Shades of Why” (2011). His latest album “Elastic Days” was released in 2018. Mascis is a two-time Grammy nominee and has been inducted into the Massachusetts Music Hall of Fame.