Mary Elizabeth Williams

Rosalinde Die Fledermaus, Leonora La forza del destinoFloria Tosca Tosca 

Eisoes gydag opera Cenedlaethol Cymru: Abigaille Nabucco, prif ran Tosca, Lady Macbeth Macbeth 

Gwaith diweddar: Lady Macbeth Macbeth, Chimène Le Cid, title role La Wally,  Odabella Attila (Theater St Gallen); prif ran Norma (Florida Grand Opera); Abigaille Nabucco (Vlaamse Opera; Seattle Opera; Oper Stuttgart; Savonlinna Opera Festival); prif ran Aida, Elisabetta Maria Stuarda (Seattle Opera); prif ran La Wally (Dallas Opera); prif ran Aida (Teatro Massimo Palermo); Santuzza Cavalleria rusticana (São Carlos Lisbon; Stadttheater Klagenfurt); prif ran Tosca (Seattle Opera; Oper Bonn; Arizona Opera; Michigan Opera Theatre; New Orleans Opera; Virginia Opera).

Graddiodd Mary Elizabeth o Luther College, Iowa, lle canodd ei rôl opera cyntaf, prif ran Suor Angelica