Miles Dewey Davis III, 1926-1991, was an American jazz musician, trumpeter, bandleader, and composer. Widely considered one of the most influential musicians of the 20th century, Miles Davis was, with his musical groups, at the forefront of several major developments in jazz music, including bebop, cool jazz, hard bop, modal jazz and jazz fusion. From the book “We are all equal”, by Finn Nygaard. Author Elsebeth Aasted Schanz, PhD, Manager and curator of the Danish Poster Museum.