The phrase "world premieres" refers to the first public presentations of new artistic or creative works in front of a live audience, such as films, plays, music, or dance performances. There are several synonyms for this term, such as "debut performances," "inaugural presentations," "first showings," "initial exhibits," or "premiere performances." These phrases convey a sense of excitement and anticipation for the unveiling of something fresh and innovative that has never been seen before. World premieres often generate buzz in the creative community and can define the trajectory of a new artist's career or contribute to the reputation of an established one.