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?
Madonna (entertainer) Madonna Louise Ciccone ( ; born August 16, 1958) is an American singer, songwriter, actress, and businesswoman. A leading presence during the emergence of MTV in the 1980s, Madonna is known for pushing the boundaries of lyrical content in mainstream popular music, as well as visual imagery in music videos and on stage. She has also frequently reinvented both her music and image while maintaining autonomy within the recording industry. Besides sparking controversy, her works have been acclaimed by music critics. Referred to as the "Queen of Pop", Madonna is widely cited as an influence by other artists.
Jim Morrison James Douglas Morrison (December 8, 1943 – July 3, 1971) was an American singer, songwriter, and poet, best remembered as the lead singer of the Doors. Due to his poetic lyrics, distinctive voice, wild personality, performances, and the dramatic circumstances surrounding his life and early death, Morrison is regarded by both music critics and fans as one of the most iconic and influential frontmen in rock music history.