Extremely rare old sea song

[usa today]

This is a very very rare version of an old sea song
Listen to the lyrics , it has a very deep meaning and is an extremely violent song

http://www.youtube.com/watch?v=u1vcjUBmZbI

An amazing vocalist

[usa today]

Ewan MacColl was an exceptional folk singer , he was also a communist, socialist and probably an anarchist

Why is it that the best folk singers are that way? If not outright communists
most are raving liberals