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"Open Up" is a song recorded by British electronic duo Leftfield featuring John Lydon (of Sex Pistols and Public Image Ltd.). It was released as a single on 1 November 1993. The single reached number 13 on the UK Singles Chart, number one on the UK Dance Singles Chart and number 39 in both Australia and New Zealand. NME reported in their 18 September 1993 issue, "This is the record that people have always wanted Lydon to do." In 2014, the same publication ranked "Open Up" at number 444 on their list of the "500 Greatest Songs of All Time".