The Sleepy Jackson are an Australian alternative rock band formed in Perth, Western Australia. The band's name was inspired by a former drummer who was narcoleptic. The band revolves around the distinctive vocal style of multi-instrumentalist and songwriter Luke Steele. Stemming from a musical family, Luke's father Rick Steele is a local blues musician, and two of Luke's siblings are also musicians, with brother Jesse a former member of The Sleepy Jackson, and sister Katy, who fronts another Perth rock band, Little Birdy. While a series of acclaimed EPs brought The Sleepy Jackson to a broader musical attention of Australia, it was the release of their 2003 album Lovers and 2006 second album Personality – One Was a Spider, One Was a Bird that directed significant international focus upon the band.

Luke James Steele is an Australian musician, singer and songwriter. Steele is the vocalist and primary songwriter of the alternative rock band the Sleepy Jackson and is a member of the electronic music duo Empire of the Sun.