Joseph Donald Mascis Jr. (; born December 10, 1965) is an American musician, best known as the singer, guitarist and main songwriter for the alternative rock band Dinosaur Jr. He has also released several albums as a solo artist and played drums and guitar on other projects. His most recent solo album, Tied to a Star, was released in August 2014. He was ranked number 86 in a Rolling Stone list of the "100 Greatest Guitarists", and number 5 in a similar list for Spin magazine in 2012.
