Dinosaur Jr. is an American alternative rock band formed in Amherst, Massachusetts in 1984. Originally called Dinosaur, prior to legal issues that forced the group to change their name, the band disbanded in 1997 until reuniting in 2005. Guitarist J Mascis, bassist Lou Barlow, and drummer Murph were the band's founding and current members; Mascis has been the group's sole continuous member. Mascis and Barlow had previously played together in a hardcore punk band called Deep Wound, formed in 1982 and broke up in mid-1984. - As initially named Mogo, they played their first show on University of Massachusetts Amherst campus in the first week of September 1984. Nakajima went into an anti-cop rant during the performance, and Mascis was so appalled by his behavior at the show that he disbanded the group the next day. A few days later Mascis called Barlow and Murph to form a new band without telling Nakajima; "I was kind of too wimpy to kick him out, exactly," Mascis later admitted, and explained, "Communicating with people has been a constant problem in the band." The trio named themselves Dinosaur, and Mascis and Barlow took over lead vocal duties. Their distinct sound, characterized by high gain, extensive use of feedback and distortion, and frontman J Mascis's melodic guitar solos, was highly influential in the alternative rock movement of the 1990s.