Opera seria -LRB- usually called dramma per musica or melodramma serio -RRB- is an MISC@1 musical term which refers to the noble and `` serious '' style of MISC@1 opera that predominated in LOCATION@1 from the NUMBER@1 to ca .

Opera seria is an MISC@1 term which refers to the `` serious '' style of MISC@1 opera in the 18th century .
