Premise: "Union City Blue" is a song by the US rock band Blondie. It was written by Debbie Harry and Nigel Harrison, and was featured on their fourth studio album "Eat to the Beat" from 1979. The tune was inspired by the 1979 movie "Union City", which Debbie Harry appeared in (she wrote the lyrics one evening during a break in the shooting).
Hypothesis: Union City Blue had more than a songwriter