Founded in the late 1980s by Bruce Pavitt and Jonathan Poneman, Seattle-based Sub Pop Records released early recordings by then-upstart regional bands such as Green River, Soundgarden, Mudhoney, Tad, Nirvana, Flaming Lips, Afghan Whigs, and Screaming Trees. When the world went grunge crazy in the 1990s, Sub Pop was suddenly the epicenter of Seattle cool. Emerging organically from Bruce Pavitt's Subterranean Pop fanzine, the...