sentence: principal singers included soprano josephine barstow , susan chilcott , susannah glanville , mary hegarty , janis kelly and linda kitchen , mezzo-soprano patricia bardon , alice coote and linda finnie , tenor barry banks , edmund barham , kim begley , philip langridge , paul nilon and christopher ventris , baritone william dazeley , gerald finley , robert hayward , keith latham , anthony michaels-moore , alan opie and eric roberts , bass and bass-baritone clive bayley , andrew shore and richard van allan , paul daniel marked his departure to become music director of english national opera with two concert performances of erich wolfgang korngold 's violanta , one in leeds and the other at the proms .