Birmingham's culture of popular music first developed in the mid-1950s. By the early 1960s the city's music scene had emerged as one of the largest and most vibrant in the country; a "seething cauldron of musical activity", with over 500 bands constantly exchanging members and performing regularly across a well-developed network of venues and promoters. By 1963 the city's music was also already becoming recognised for what would become its defining characteristic: the refusal of its musicians to conform to any single style or genre. Birmingham's tradition of combining a highly collaborative culture with an open acceptance of individualism and experimentation dates back as far back as the 18th century, and musically this has expressed itself in the wide variety of music produced within the