The Metropolitan Opera on Instagram: "@Nadine.Sierra’s voice always makes our hearts soar. 😍 Soprano Nadine Sierra is back on the Met stage this season as the sleepwalking Amina in Bellini’s La Sonnambula. While we set the stage for Rolando Villazón’s new take on this dreamy piece, enjoy this throwback to Sierra’s triumphant run in the title role of Donizetti’s Lucia di Lammermoor in 2022. In this clip from the Live in HD transmission, Sierra sings Lucia’s Act I aria. La Sonnambula opens Octobe