What song co-written by Sia was performed by Tokio Myers on Britain's Got Talent in semi-final 3?
Diamonds (Rihanna song) "Diamonds" is a song recorded by Barbadian singer Rihanna for her seventh studio album, "Unapologetic" (2012). It was written by Sia Furler together with its producers, Benny Blanco and StarGate. The song premiered on September 26, 2012, during the "Elvis Duran and the Morning Show" and was digitally released the following day as the lead single from "Unapologetic". Def Jam Recordings serviced the single to contemporary hit radio in the United States on October 2. "Diamonds" is a mid-tempo pop, electronic and R&B ballad that features heavy synthesizers, orchestral sounds and electronic rhythms. The song's lyrics serve as a departure from the themes of unhealthy relationships that were on Rihanna's previous singles and contain a prominent concept of love.
Leona Lewis Leona Louise Lewis (born 3 April 1985) is a British singer, songwriter and animal welfare campaigner. She was born and raised in the London Borough of Islington, London, where she attended the BRIT School for Performing Arts and Technology. Lewis achieved national recognition when she won the third series of "The X Factor" in 2006, winning a £1 million recording contract with Simon Cowell's record label, Syco Music. Her winner's single, a cover of Kelly Clarkson's "A Moment Like This", peaked at number one for four weeks on the UK Singles Chart and it broke a world record for having 50,000 digital downloads within 30 minutes. In February 2007, Lewis signed a five-album contract in the United States with Clive Davis's record label, J Records.