Sarah Vaughan, also known as Sassy or The Divine One, was an American jazz singer known for her incredible vocal range and improvisational skills. She was one of the most important and influential jazz vocalists of the 20th century, whose style and technique set the standard for future generations of jazz singers. Other synonyms for Sarah Vaughan include The Queen of Jazz, The Lady Who Swings, The Velvet Fog, and The Great One. Her powerful yet intimate voice and emotionally charged interpretations of jazz standards continue to captivate audiences to this day, making her an icon of jazz music that will never be forgotten.