DWIGHT & NICOLE BIO Music pours out of Dwight & Nicole. They have just arrived in Boston after a taxing four-hour drive from their home in Burlington, Vermont, yet there is Dwight, sitting on a couch, holding a guitar and joining Nicole for a surprise version of Roy Orbison's sweetly enchanting "Blue Bayou." The sound fills the room, enhanced by added guitar from their producer, Milt Reder, whose gorgeous home studio, Rear Window, is where Dwight Ritcher and Nicole Nelson have recorded their last two albums. "I LOVE Roy Orbison!" Nicole says when she completes the song. Frankly, Dwight & Nicole love all kinds of music, which is evident on their new, aptly titled CD, "Shine On," an inspiring mashup of folk, blues, pop, jazz, gospel and reggae styles. The album can't be categorized easily, but that's fine. "I don't want to do just one thing," says Nicole, who won the latest Boston Music Awards nod for best female vocalist. The new album...