Chicago to Jerry Lang in 7 Steps

1. Chicago was published by Robin Hood Music Co.
2. Robin Hood Music Co. published So Proud of You
3. So Proud of You was written by John Marascalco
4. John Marascalco wrote Baby Baby
5. Baby Baby was written by Harry Nilsson
6. Harry Nilsson sang Donna I Understand
7. Donna I Understand was arranged by Jerry Lang

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