Released today by Alpha Classics, 'La Passione' combines Luigi Nono's Djamila Boupacha for solo soprano, Haydn's Symphony No 49 (sometimes called La Passione) and Gérard Grisey's Quatre chants pour franchir le seuil. Ludwig Orchestra is conducted by Barbara Hannigan who also sings in the two modern works. James Jolly spoke to Hannigan, down the line, to find out about how she put the album together.