Sarah Lois Vaughan (March 27, 1924 – April 3, 1990) was an American jazz singer. She has been described by music critic Scott Yanow as having "one of the most wondrous voices of the 20th century."Read about Sarah Vaughan in Wikipedia
I don't know why people call me a jazz singer, though I guess people associate me with jazz because I was raised in it, from way back. I'm not putting jazz down, but I'm not a jazz singer. . . I've recorded all kinds of music, but (to them) I'm either a jazz singer or a blues singer. I can't sing a blues – just a right-out blues – but I can put the blues in whatever I sing. I might sing 'Send In the Clowns' and I might stick a little bluesy part in it, or any song. What I want to do, music-wise, is all kinds of music that I like, and I like all kinds of music.