"Heart of Glass" is a song by American new wave band Blondie, written by singer Debbie Harry and guitarist Chris Stein. Featured on the band's third studio album, Parallel Lines (1978), it was released as the album's third single in January 1979 and topped the charts in several countries, including the United States and the United Kingdom.
In December 2004, Rolling Stone ranked the song number 255 on its list of the 500 greatest songs of all time. It was ranked at number 259 when the list was updated in April 2010.
Currently, "Heart of Glass" is ranked no. 56 in the UK's official list of biggest selling singles of all-time with sales of 1.28 million copies.