Complex sentence: In April 2012, DiDonato sang the role of Mary Stuart in Donizetti's "Maria Stuarda" with the Houston Grand Opera, repeating the role in the work's premiere performances at the Metropolitan Opera in January 2013.
Split into simpler sentences: In April 2012, DiDonato sang the role of Mary Stuart in Donizetti's "Maria Stuarda" with the Houston Grand Opera. She repeated the role in the opera's premiere at the Metropolitan Opera in January 2013.