Known as James Marshall “Jimi” Hendrix, Johnny Allen Hendrix, 1942-1970, was an American musician, singer and songwriter. Despite a limited mainstream exposure of four years, he is widely considered one of the most influential electric guitarists in the history of popular music, and one of the most important musicians of the 20th century. From the book “We are all equal”, by Finn Nygaard. Author Elsebeth Aasted Schanz, PhD, Manager and curator of the Danish Poster Museum.