What singer born in London in 1988 joined The Voice as a new judge in 2015?
Jessie J Jessica Ellen Cornish (born 27 March 1988), known professionally as Jessie J, is an English singer and songwriter. Born and raised in London, she began her career on stage, aged 11, with a role in the West End musical "Whistle Down the Wind". She studied at the BRIT School before signing with Gut Records and striking a songwriting deal with Sony/ATV Music Publishing.
Bars and Melody Bars and Melody (B.A.M.) are a British singing/rapping duo consisting of rapper Leondre "Bars" Devries and singer Charlie "Melody" Lenehan. They took part in the eighth series of "Britain's Got Talent" in 2014. During their audition, they were automatically sent into the semifinals of the competition after the head judge, Simon Cowell, pressed the "golden buzzer." They ultimately finished in third place in the series.