The Rock and Roll Hall of Fame, established in 1986 and located in Cleveland, Ohio, United States, is dedicated to recording the history of some of the best-known and most influential musicians, bands, producers, and others that have in some major way influenced the music industry, particularly in the area of rock and roll. Originally, there were four categories of induction: performers, non-performers, early influences, and lifetime achievement. In 2000, "sidemen" was introduced as a category while that year also marked the final time that early influences would be inducted.