En direct, Vidéo: Rechercher des critiques de musique classique, opéra et ballet | Sir Harrison Birtwistle

The work of Sir Harrison Birtwistle isn't necessarily the sunniest music in the world, and coming into the Queen Elizabeth Hall last night for a serious-minded evening of discussion and performances of his intricate, modernist-style music by the London Sinfonietta, I confess to having felt a little reluctant to be leaving behind the sweltering heat of the South Bank.