About her performance of Ariel in The Tempest at the Metropolitan Opera, The New York Times said, "Mr. Adès's Ariel is a dazzling creation, and Ms. Luna conquers the role."[3]
In 2017, Luna set the record for singing the highest written note on the Metropolitan Opera stage, A♮6, during the American premiere production of Thomas Adès' new opera The Exterminating Angel;[5][6][7] Luna was part of that opera's world premiere at the Salzburg Festival in 2016, and a production by the Royal Opera House, London, in 2017.
Other roles in Luna's repertoire include Zerbinetta in Ariadne auf Naxos, the title role in Donizetti's Lucia di Lammermoor, Madame Mao in Adams' Nixon in China, Gilda in Verdi's Rigoletto, the title role in Lakmé by Delibes, and Chief of the Gepopo in Ligeti's Le Grand Macabre. In the 2017/18 season, she sang two Donizetti roles for the first time, Norina in Don Pasquale and Marie in La fille du régiment.