Seattle rockers Green River, the band that included future members of Pearl Jam and Mudhoney, will reform next summer, Pearl Jam guitarist Stone Gossard told Billboard.com.Green River.Gossard, who was in Green River, said the group would play a show that will celebrate the 20th anniversary of Sub Pop records, the label that did much to popularize the so-called ‘grunge’ scene which included Green River, Mudhoney and Nirvana."Pearl Jam has toured with Mudhoney, so we played with [former Green River members] Mark [Arm] and Steve [Turner]," Gossard told Billboard. "But we haven't played with Alex [Vincent] and Bruce [Fairweather] in quite a while. They're both excited about it, from everything I've heard."An early version of Green River, which formed in 1984) was comprised of singer Mark Arm, guitarists Steve Turner and Stone Gossard, bassist Jeff Ament and drummer Alex Vincent (aka Alex Shumway). Turner left the band and was replaced by Bruce Fairweather. After the group broke up in 1988, Gossard and Ament formed Pearl Jam while Arm and Turner started Mudhoney.For more:http://www.reuters.com/article/musicNews/idUSN0241422520071003