On its world premiere in Luxembourg in 2007, the Guardian placed Jonathan Harvey’s Wagner Dream on the lengthening list of operas by British composers that urgently need a staging here. Finally, on 29 January, this thrilling work will have its UK premiere as a semi-staged performance in the Barbican Hall with Martyn Brabbins conducting the BBC Symphony Orchestra. Marcus O’Dair and Ben Eshmade speak to the key people involved in this project and unearth the delights and surprises that are in store. Part of BBC SO’s Total Immersion Weekend (28 – 29 Jan) celebrating the life and music of Jonathan Harvey.