Pearl Jam doesn't play the corporate game. Or so the hugely successful Seattle-based rock music group would have you believe. The band's origins are in that city's anti-corporate, grunge rock movement. Fronted by singer-songwriter Eddie Vedder, the band's street credibility was reinforced by a lengthy, late 1990s feud with Ticketmaster, which the band boycotted in an effort to keep ticket prices down for its fans. But last week, a Delray Beach, Fla., music entrepreneur, Shep Alster, challenged Pearl Jam's populist image in Palm Beach Circuit Court. He is suing the band and its business consultant, Peter McQuaid, contending that they...