Critics groaned when Uncle Tupelo broke up in 1994; they should've rejoiced. So far, the split has yielded two chicken-fried pop surprises first Jeff Tweedy's Wilco, now Son Volt. Equal parts twang and thrash, Traceretraces Tupelo's trademark style fiddles and banjos rub elbows with stuttering rhythms and Townshendian power chords but this time frontman Jay Farrar smokes through his tales of Main Street woe with a new fire. Call it hillbilly alchemy: Son Volt turns heartland rust into gold. A

