LSD

Tim McKenzie, better known by his stage name Labrinth, is an English singer/songwriter and record producer, becoming label Syco's first non-talent show signing in six years. Initially, he was tipped to work as a producer, but Cowell signed him as a solo act. Labrinth made his debut appearance on the UK Singles Chart in March 2010, when his collaboration with British rapper Tinie Tempah "Pass Out" reached number one. His first solo single "Let the Sun Shine" was released in September 2010, reaching number three in the same chart. His debut album Electronic Earth was released on 31 March 2012, having been preceded by the singles "Earthquake" featuring Tinie Tempah and "Last Time", which peaked at number two and number four respectively.

Sia Kate Isobelle Furler (born 18 December 1975), referred to mononymously as Sia, is an Australian singer, songwriter, record producer and video music director. She started her career as a singer in the local Adelaide acid jazz band Crisp in the mid-1990s. In 1997, when Crisp disbanded, she released her debut studio album titled OnlySee in Australia. She then moved to London, England, and provided lead vocals for the British duo Zero 7.