As the thunderstorm roared and the rain fell on the canvas roof, Opera Holland Park’s Ariadne got off to a slow and uncertain start. The prologue and particularly The Party Planner of Eleanor Bron were most difficult to hear, that is until the entrance and the ecstasy of The Composer sung by the Swedish soprano, Julia Sporsen. She was a revelation with flawless delivery and a performance that tugged at the heartstrings, particularly when confronting her relationship with the Zerbinetta of Jennifer France.