Original sentence: However, opera performances typically involve artists, such as singers, instrumentalists and often dancers and actors, working together with each other.Opera is one of the performing arts (alongside music, drama and dance), and its special character derives from the combination of elements of the others, and as with other dramatic forms, scenery, costumes, and lighting add visual interest.Opera is performed live, usually in a specially-equipped opera house.The opera world is international, and works are performed world-wide in their original languages, while artists travel from country to country performing.The sound is unamplified in order to feature the sound of the trained operatic voice.There are many different genres of opera, and the scale of production varies
Edited sentence: Opera is invariably live, performed in a specially-equipped opera house.Opera is one of the performing arts (alongside music, drama and dance), and its special character derives from the combination of elements of the others, as well as visual effects conveyed by scenery, costumes, and lighting,.The opera world is international - in contrast to spoken theatre - and Italian, German, French, English, Russian and Czech etc.The sound is unamplified in order to feature the beauty of the trained operatic voice.There are many different genres of opera and the scale of production varies, however performance typically involves artists, such as singers, instrumentalists and often dancers and actors, working together with each other.works are performed world-wide in their original languages, while artists travel from country to country performing