Popular composers of opera seria included PERSON@1 , PERSON@2 , PERSON@3 , PERSON@4 , PERSON@5 , and in the second half of the 18th century PERSON@6 , PERSON@7 , and PERSON@8 .

Popular composers of opera seria included PERSON@9 , PERSON@10 , PERSON@11 , PERSON@5 , PERSON@12 , ORGANIZATION@1 , PERSON@13 , PERSON@7 , and PERSON@8 .
