A seminal contribution to the popular music industry of the nineteen-sixties came to be known as the “British Invasion”. This invasion can further be characterized as consisting of two schools- each one relying on a specific American musical style for its inspiration. Discuss these diverse schools, noting their unique American templates. Furthermore, identify a minimum of three representative bands and songs that best characterize each school. What, in your opinion, is the logical reason why two differing approaches to imitating American popular music came from Great Britain at this time?