Overview: Great Performances at The Met returns to PBS for its twelfth season in 2018, delighting audiences with nine productions featuring the world’s leading stars of opera. PBS is excited to highlight two of these operas – Norma and Tosca – with primetime broadcasts. The season opens with The Met’s new production of Bellini’s Norma, starring Sondra Radvanovsky as the titlular druid high priestess, opposite Joyce DiDonato as Norma’s new rival and Joseph Calleja as her unfaithful lover.