Andrew Lloyd Webber (born 1948) is a British composer. He has written more than 20 musicals, several of which have played both in the West End and on Broadway for more than a decade. Among the best known are "Cats", "Evita" , "Jesus Christ Superstar", "Joseph and His Amazing Technicolour Dreamcoat", "The Phantom of the Opera" and others .... Some of the songs from his musicals have become very successful outside of their parent musicals, such as "Memory" from Cats, "The Music of the Night" and "All I Ask of You" from Phantom of the Opera, "I Don't Know How to Love Him" from Jesus Christ Superstar, "Don't Cry for Me Argentina" from Evita, and "Any Dream Will Do" from Joseph and His Amazing Technicolor Dreamcoat. In 2001, The New York Times called him "the most commercially successful songwriter in history."

Phillip Keveren (born 1961) is an American composer, arranger and pianist who is known for his ability to create in a variety of musical styles and genres. As a composer, he writes works not only for piano, but also for other instruments, chamber ensembles and orchestras. As an arranger, he is best known for his series of piano arrangements, "The Phillip Keveren Series", which covers a wide range of compositions from classical to jazz to popular music. Keveren is also the co-author of the popular "Hal Leonard Student Piano Library" piano school. His compositions and arrangements appeal to students and seasoned performers alike and are a popular part of the piano repertoire worldwide.