Halia Meguid

 is a vocalist who has performed music composed by Murray Gold during the Steven Moffat era. She sang the Siren's song in "The Curse of the Black Spot", featured on the Series 6 soundtrack album in the track "Deadly Siren". Meguid also performed "Missy's Theme", the leitmotif that accompanied the Michelle Gomez' incarnation of the Master.

Meguid also recorded a demo of the beginning of the Long Song from The Rings of Akhaten.