Pop (short for pop) also refers to pop music. Early refers to a concert that can attract a large audience. 1858, Benedict founded the London Pop Concert, which lasted for 1898. Since the late 1950s, the word "pop" refers to non-classical music, which is usually called songs performed by Beatles, Rolling Stones, Abba and other performers. Therefore, it is also called "pop music group" (pop music performers are usually singers, guitarists and drummers, and sometimes complicated electro-acoustic effects are added) and "pop music festival".