The song "Masterpiece" is by this American singer and songwriter who is  widely cited as an influence by other artists and often referred to as what?
Masterpiece (Madonna song) "Masterpiece" is a song by American singer Madonna for the soundtrack of the 2011 film "W.E." The song was later included on her twelfth studio album "MDNA" (2012). It served official radio release in the United Kingdom on April 2, 2012, to promote the album. Madonna composed the song alongside Julie Frost and Jimmy Harry, and produced it with William Orbit. "Masterpiece" is a midtempo pop ballad which is reminiscent of her works from the 1990s. The song garnered positive reviews from contemporary critics, who praised its lyrical content and Madonna's vocal performance.
Clarence McDonald Clarence "Mac" McDonald is a Los Angeles-based pianist, composer, arranger, and producer. McDonald is known for his musical diversity, enduring melodies and signature groove. His most famous composition is "Silly" sung by Deniece Williams in 1981 and Taral Hicks in 1997. In 2010 the song instrumental intro and bridge were sampled in Monica's seven weeklong Billboard #1 RB Grammy nominated song "Everything To Me". He has worked with a long list of entertainment icons including Ray Charles, Barbra Streisand, Ella Fitzgerald, Justin Timberlake, Aretha Franklin, James Taylor, Carole King, Taral Hicks, Freddy Hubbard, Nancy Wilson, Boz Scaggs, Seals & Crofts, Bill Withers, and The Jackson 5.