to open Led Zeppelin concerts from 1970 to 1972. On the second half of their 1972 concert tour of the United States, it was introduced by a short piece of music known as "LA Drone", designed to heighten the sense of anticipation and expectation amongst the concert audience. By 1973, "Immigrant Song" was occasionally being used as an encore, but was then removed from their live set.[1] Live versions of the song can be heard on the Led Zeppelin albums How The West Was Won (featuring a ...