He was noted for his rich , resonant , almost operatic bass - baritone voice .
William Clarence Eckstine ( July 8 , 1914 -- March 8 , 1993 ) was an American jazz and pop singer , and a bandleader of the swing era .
William Clarence Eckstine was noted for William Clarence Eckstine 's rich , resonant , almost operatic bass - baritone voice .
William Clarence Eckstine ( July 8 , 1914 -- March 8 , 1993 ) was an American jazz and pop singer , and a bandleader of the swing era .