This week I present two outstanding guitarists.  Their work changed the course of Americana music, folk, and rock 'n' roll.  Playing for decades after careers that began just after high school, both musicians also found causes to devote their skills to -- from the preservation of folk music to healing music therapy.  Their music is the sound track of Vietnam war protests and mega-concerts -- for an era built, built on rock 'n' roll.

ROGER McGUINN -- Guitarist, co-founder of The Byrds, his song hits range from Mr. Tambourine Man to Eight Miles High to Turn, Turn, Turn. He explains how his guitar technique and changes of beat made his hit songs. His design of a seven-string guitar gives him the strength of 12 strings and flexibility of a six-string, yet still he makes that distinctive jingle-jangle magic for us at the 12 Galaxies.

CRAIG CHAQUICO -- His guitar virtuosity with Jefferson Ariplane and Starship and work with Grace Slick and Marty Balin shaped his world-wide music experiences.  His own hospital experience as a boy led to his guitar playing, and now his extensive work in the field of music therapy.  We hear him solo and with his band, from the Bowmer Theater in Ashland, Oregon, to Studio 55 in Marin.  He now lives in the State of Jefferson.