J Mascis (b. 1965) is an American musician and songwriter, probably best-known as the singer, guitarist, and songwriter for Dinosaur Jr., though he has also occasionally worked as a producer and film composer.
These are photos from concerts where J Mascis played, so they may be of other bands that played the concert as well.
Broken Social Scene / Bloc Party / Feist / J Mascis / Raising The Fawn Jun 24, 2006 Toronto, Ontario, Canada Uploaded by Bobby B: The Vinyl Vagabond