Madonna Louise Ciccone is an American singer-songwriter and actress. Referred to as the "Queen of Pop", she is regarded as one of the most influential figures in popular culture. Madonna is noted for her continual reinvention and versatility in music production, songwriting , and visual presentation. She has pushed the boundaries of artistic expression in mainstream music while remaining completely in charge of every aspect of her career. Her works, which incorporate social, political, sexual, and religious themes, have generated critical acclaim and controversy. Madonna is often cited as an influence by other artists.