Maria Callas was a renowned Greek-American soprano opera singer. She was born in 1923 and is considered one of the most influential opera singers of the 20th century. Her career spanned from the 1940s to the 1970s and she was known for her powerful voice, dramatic interpretations, and unique vocal style. She was also known for her collaborations with other famous composers and conductors. Maria Callas was a true icon of the opera world and her legacy continues to live on today.