Opera incorporates only singing.
Opera -LRB- -LSB- pera -RSB- ; English plural : operas ; Italian plural : opere -LSB- pere -RSB- -RRB- is an art form in which singers and musicians perform a dramatic work combining text -LRB- libretto -RRB- and musical score , usually in a theatrical setting .	art form	Performing arts	libretto	libretto	musical score	Sheet music	setting	Set construction
