 From NPR and WBUR, I'm Scott Tong in Washington, D.C. And I'm Lisa Mullins in Boston. This is Here and Now. Arlo Guthrie is one of the most iconic figures of American folk rock. His 18-minute song and monologue, Alice's Restaurant, was a massive hit. Guthrie took the stage at Woodstock in 1969. More than a half century later, he's got a huge and loyal following. Today is Arlo Guthrie's 77th birthday. He still has a head full of curls, a cascade of silver now,