With the Washington Post praising their “ability to create the best rock, jazz, bluegrass, and the rest in sonorities that are rich, transparent, balanced, and, blessedly, lightly aplified,” the Grammy-winning, genre-hopping chamber musicians of the Turtle Island Quartet serve as the latest guests in Quad City Arts' Visiting Artists series, their October 6 concert at Rock Island High School sure to demonstrate why the San Francisco Examiner hailed their “zest, imagination, and brilliant technique.”