The piece is part of the ballet Wild Swans, choreographed by Meryl Tankard at the Sydney Opera House in 2002, based on the fairy tale The Wild Swans by Hans Christian Andersen. Originally scored for soprano and orchestra, Eliza Aria introduces Princess Elisa and expresses her pure soul, innocence and belief in the goodness of the world: Without saying a word, she must weave stinging nettles into cloth to save her enchanted brothers.

The short, enchanting vocalise is perhaps Elena Kats-C...