‘An Aria with Diverse Variations for the Harpsichord with Two Manuals, Composed for Music Lovers to Refresh their Spirits by Johann Sebastian Bach’ is now known simply as the Goldberg Variations. Legend has it that a student of Bach’s used to play the Variations to a friend who suffered from frequent bouts of insomnia. Despite its unwieldy title, there is no mistaking this body of work as one of the greatest pieces of music ever written. Thomas Adès’ ‘Nightfalls’ will set the nocturnal scene before the ACO presents the Australian premiere of Canadian composer/ conductor Bernard Labadie’s string arrangement of Bach’s iconic keyboard work. A transformation of the original – which many of you will recognise – it offers audiences something fresh and inventive.