By act two, however, this ingenious score, with offstage bands, vast orchestra, massive chorus, began to catch fire. The arrival onstage of John Daszak's ardent Aeneas (in a suit) marked a musical turning point, bringing out the best both in Susan Bickley's raw, desperate Cassandra (did she have to be dressed as a headmistress?) and in the threatened ENO chorus. Robert Poulton, as Chorebus, never quite got into his stride.