Original: It has seen the premières of several works by Britten (A Midsummer Night's Dream in 1960; Death in Venice in 1973) and also Harrison Birtwistle's Punch and Judy in 1968.
Simplified: In the past there have been first performances of several works by Britten: (A Midsummer Night's Dream in 1960; Death in Venice in 1973) and also Harrison Birtwistle's Punch and Judy in 1968.