Chicago to Ray Gilbert in 7 Steps

1. Chicago was published by Robin Hood Music Co.
2. Robin Hood Music Co. published I Know
3. I Know was written by Harry Nilsson
4. Harry Nilsson produced Drumming is My Madness
5. Drumming is My Madness features guitar played by Fred Tackett
6. Fred Tackett played guitar for Zip-A-Dee-Doo-Dah
7. Zip-A-Dee-Doo-Dah was written by Ray Gilbert

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