Complex sentence: He has sung as Edgardo, Rodolfo, the Duke, and Lenski in "Eugene Onegin" at the Opéra National de Paris, and at the Royal Opera House, Covent Garden he has sung Lindoro in "L'italiana in Algeri".
Split into simpler sentences: He has sung as Edgardo, Rodolfo, the Duke, and Lenski in "Eugene Onegin" at the Opéra National de Paris. At the Royal Opera House, Covent Garden he has sung Lindoro in "L'italiana in Algeri".