Lulu Kennedy-Cairns is a Scottish singer, actress, and television personality. Her career has spanned six decades. Her debut single, a cover version of The Isley Brothers song "Shout", reached the top ten of the UK Singles Charts in 1964. In 1967 she rose to international prominence after appearing in the film To Sir, with Love singing the theme song, which topped the US Billboard Hot 100 for five consecutive weeks.

"Shout" is a popular song, written and originally recorded by American vocal group the Isley Brothers in 1959. Later versions include a UK Top 10 hit in 1964 by Scottish singer Lulu.