The harmonica has played an important part in Blues and Rock N Roll. Perhaps one of the most influential and important Delta Blues artist who made the harmonica such a part of his music was Frank Frost. It was Sonny Boy Williamson who taught Frost the magic of the harmonica. And it was Sam Phillips, the man who discovered Elvis Presley, who produced the album, “Hey Boss Man,” by Frank Frost with the Nighthawks in 1961. A copy can get you $2,500.00 today.