Guest artists Jonathan Abernethy, tenor and Anna Dowsley, mezzo soprano, perform the love duet from Hector Berlioz's "Les Troyens", "Nuit d'ivresse" (Night of rapture) at the Finals Concert of the 2016 IFAC Australian Singing Competition, held in the Concert Hall of The Concourse, Chatswood, on Thursday 18th August 2016.