Presence is the seventh studio album by the English rock band Led Zeppelin, released by their own label Swan Song Records on 31 March 1976 in the United States and on 2 April 1976 in the United Kingdom. While the record was commercially successful, reaching the top of both the British and American album charts, and achieving a triple-platinum certification in the United States by the RIAA, it received mixed reviews from critics and is the lowest-selling album by the band.

"Achilles Last Stand" is a song by the English rock group Led Zeppelin released as the opening track on their seventh studio album, Presence (1976). Guitarist Jimmy Page and singer Robert Plant began writing the song during the summer of 1975 and were influenced by Eastern music, mythology, and exposure to diverse cultures during their travels. At roughly ten-and-a-half minutes, it is one of the group's longest studio recordings and one of their most complex, with interwoven sections and multiple, overdubbed guitar parts.