The album will be released on 25 October through the Other Songs label.
Nicole Scherzinger will reprise her role as Norma Desmond
The musical will premiere in Melbourne at the Princess Theatre in May 2024 and move to the Sydney Opera House in August.
Sunset Boulevard will play for 16 weeks only at the Savoy Theatre from 21 September
She has appeared in Cats as Grizabella and was nominated for an Olivier Award for this role in 2015.
