The song Killer Queen was written by Freddie Mercury and released by the British rock band Queen in 1974 on the album Sheer Heart Attack. It was also issued as a single and became the band’s first major international hit, reaching No. 2 on the UK Singles Chart and entering the US Top 20. The lyrics describe a high-class call girl, told through witty and ironic imagery. Musically, the song blends glam rock with elements of music hall and features multi-tracked vocals and a distinctive piano line, helping to establish Queen’s signature style.