A composer writes a musical manuscript called a score
The term that best completes the statement above would be "aria." It is a part of the opera wherein it expresses the music of the ensemble in such a way that it dictates the tone of the opera. It is usually accompanied by an instrument and it is not necessarily song by the opera singer.
Adding auxiliary bounce lighting or reflectors is used in weddings
They will create art that sends a meaning of hope and violence and people will interprete the art in like "bad" ways.