Blues Rock is simply a style of rock music that is the inevitable outcome of the blues music of the southern U.S.A. which became transplanted to the mid-northern U.S. when thousands of black Americans were forced to move to northern centers in search of work in the 1930's and 40's. British musicians in the 60's (such as Eric Clapton and Jeff Beck) began emulating the blues musicians of the U.S.(like Muddy Waters) and blues rock was born. It is championed today by artists like Joe Bonamassa of the U.S.A.