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). Madonna (entertainer): Madonna Louise Ciccone ( ; born August 16, 1958) is an American singer, songwriter, actress, and businesswoman. Madonna (entertainer):  Referred to as the "Queen of Pop", Madonna is widely cited as an influence by other artists.
Queen of Pop