Robert Lopez is an American composer and lyricist known for his work in musical theater and film. He gained fame for co-creating the hit Broadway musicals Avenue Q and The Book of Mormon, both of which received critical acclaim and numerous awards. In addition to his stage work, Lopez is also recognized for his contributions to animated films, particularly with Disney. He co-wrote the songs for Frozen, including the Academy Award-winning "Let It Go," and has worked on other projects like Coco and Frozen II. His achievements have earned him multiple Tony Awards and Academy Awards.