Elvis Costello (born Declan Patrick MacManus 25 August 1954) is an English musician and singer-songwriter. Costello came to prominence as an early participant in London's pub rock scene in the mid-1970s, and later became associated with the punk rock and New Wave musical genres, before establishing his own unique voice in the 1980s. Steeped in wordplay, the vocabulary of Costello's lyrics is broader than that of most popular songs, and his music has drawn on dozens of genres. Critic Stephen Thomas Erlewine wrote, "Costello, the pop encyclopedia, can reinvent the past in his own image".

Costello and Canadian jazz singer and pianist Diana Krall were married on December 6, 2003 at Elton John's estate outside London. Their first children together, twin sons Dexter Henry Lorcan and Frank Harlan James, were born December 6, 2006 in New York City.