The collaboration between the Royal Opera and the Guildhall School of Music and Drama was established in 2013 as an opportunity for one composer every two years to research and write a major operatic work. Na’ama Zisser is the second such composer in residence, and she studied at the Royal College of Music under Turnage. Together with her sister Rachel and her partner Samantha Newton, who jointly wrote the libretto, they have structured a new chamber opera called Mamzer Bastard.