Opera singing in a dream can be symbolic of confidence, pride and art. To dream of an opera conveys divinity which is hidden inside yourself and trying to express itself through careful choices like peace and optimism. In your waking hours, continue to participate in creative events and projects, it will help you in further developing your embrace of the arts.
The opera could symbolize a desire for drama or excitement in your life. Dreams about grand, extravagant events like operas can sometimes be related to a desire for more excitement or drama in your waking life. This could be related to a feeling of boredom or a lack of stimulation in your daily routine.