A guitar virtuoso, indie rock, and the return of an old local favorite are all musical options for the coming weekend. Friday, September 21 Laurence Juber at Sunrise Stage (Fayetteville) - $27, 7:30 to 10 p.m. Mountain Sprout at George's Majestic Lounge (Fayetteville) - $8 adv., $10 day of, 9:30 p.m. Mirror Fields, space4lease at Smoke and Barrel Tavern (Fayetteville) - $5, 9 p.m. to 12 a.m. Foggy Bobcat at Black Apple Crossing (Springdale) - 8 to 10 p.m. Nathan Bryce and Loaded Dice at Chelsea