Never mind that Starbucks put one of her songs on its Hear Music Sampler 10. Never mind that she has been nominated for four Grammies or that she has appeared on every other movie soundtrack released since 1998. Gillian Welch is not a star. But she might be as big as a roots singer-songwriter can get while remaining true to her roots. Finally done touring with fellow reluctant star Norah Jones, Welch can focus on her own Soul Journey, which was released more than a year ago. Onstage, she's still a horse-faced waif in a cotton dress and cowboy boots, and she still sings about rolling stones, travelers and girls searching for themselves. Musical soul-mate David Rawlings is still there to help with the drums, fiddle, organ and guitar. The spare, straightforward songs from Journey, Welch's fourth album, make more sense in person, where Welch easily sheds the trappings of almost-fame.