Although he is but one man, Keller Williams travels with strings aplenty. So, he of the multiple guitars, is the latest artist aptly added to the Northwest String Summit. The event which is hosted by the Yonder Mountain String Band returns to Hornings Hideout in North Plains, Oregon on June 24-26. Williams is currently on tour, at the Neighborhood Theater in Charlotte, NC this evening and, appropriately, on a co-bill with Yonder tomorrow at the Tennessee Theater in Knoxville, TN. As for YMSB, the Flecktones’ Futureman will be performing with the quartet this evening at the Tabernacle in Atlanta.