Ever since word got out that it was Sonic Youth who sweet-talked their record label, DGC, into signing Nirvana, every musician who ever rubbed shoulders with Thurston Moore has had itchy palms. And with good reason: Now that guitar-based rock once again has some commercial clout, the majors have been beating the bushes for young, loud and snotty types with the same je ne sais quoi as Kurt Cobain's...