In this March 31, 2013 photo released by Metropole Hanoi, Joan Baez 

In this March 31, 2013 photo released by Metropole Hanoi, Joan Baez stands with her back to the wall of an historic bomb shelter under the Metropole Hotel in Hanoi, Vietnam. The folk singer and social activist spent a few days recently reliving her past, returning to Hanoi for the first time since December 1972, when American B-52s were raining bombs on it.  (AP Photo/Metropole Hanoi) EDITORIAL USE ONLY
Associated Press
In this March 31, 2013 photo released by Metropole Hanoi, Joan Baez stands with her back to the wall of an historic bomb shelter under the Metropole Hotel in Hanoi, Vietnam. The folk singer and social activist spent a few days recently reliving her past, returning to Hanoi for the first time since December 1972, when American B-52s were raining bombs on it. (AP Photo/Metropole Hanoi) EDITORIAL USE ONLY
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