Led Zeppelin were an English rock band who were active from 1968–1980. They are widely considered to be one of the most powerful, innovative, successful, and influential bands in the history of rock music. Led Zeppelin have sold over 300 million albums worldwide, including 111.5 million certified units in the United States, making them one of the world's best-selling music artists in history, as well as the second best selling band of all time in the United States.