Claim: Shortly after parting ways with Lava/Republic in 2013, Tiz, a British pop singer-songwriter, partnered with songwriting/production duo Rock Mafia; then released a cover of Rock Mafia's song "The Big Bang", which debuted on the Billboard Hot 100 on May 17, 2014.
Evidence: Shortly after parting ways with Lava/Republic in 2013, Tiz partnered with songwriting/production duo Rock Mafia. Kate Alexandra Tizzard (born 6 July 1988) is a British pop singer-songwriter. Tiz released a cover of Rock Mafia's song "The Big Bang", which debuted on the Billboard Hot 100 on 17 May 2014.