Original: Sarah Lois Vaughan ( March 27 , 1924 & ndash ; April 3 , 1990 ) was an American jazz singer , described by Scott Yanow as having '' one of the most wondrous voices of the 20th century '' .
Simplified: Sarah Lois Vaughan ( March 27 , 1924 -- April 3 , 1990 ) was an American jazz singer .