The completed song was introduced in 1932 by Mildred Bailey and Paul Whiteman ; their version rose to number fourteen on the charts .
After several musicians had recorded the instrumental version , lyrics were written by Gus Kahn .
The completed song was introduced in 1932 by Mildred Bailey and Paul Whiteman ; musicians ' version rose to number fourteen on the charts .
After several musicians had recorded the instrumental version , lyrics were written by Gus Kahn .