Opera, he says, is an art which depends upon ensemble, and this does not have great appeal for him - 'There are many Mozart operas I like very much but I do not feel compelled to sing in them!' he says with disarming frankness; 'I like to look to the operas from the 20th century where the most important part is in the main character, and he is partly why Wozzeck interests me; he is so individual,