Sheer Heart Attack is the third studio album by the British rock band Queen, released on 8 November 1974 by EMI Records in the United Kingdom and by Elektra Records in the United States. Departing from the progressive themes featured on their first two albums, the album featured more pop-centric and conventional rock tracks and marked a step towards the "classic" Queen sound. It was produced by the band and Roy Thomas Baker, and launched Queen to mainstream popularity in the UK and throughout the world.