New project in South promotes music 'triangle'

Led by Nashville preservationist Aubrey Preston , a group of historians and music lovers have come up with the Americana Music Triangle. Stretching from Nashville to Memphis to New Orleans - and encompassing points in between - the triangle includes locations in the South that contributed to the birth of the musical genres, from Clarksdale, Miss., the home of blues masters Muddy Waters and John Lee Hooker , to Muscle Shoals, Ala., site of the famed music studio where Aretha Franklin , the Rollin