I feel like the Sundance Kid behind a synthesizer
I watched a couple of westerns when we were doing this, like Butch Cassidy And The Sundance Kid which gets a reference in there.
This basically restates the above line, only Turner is using a popular western as an example. The Sundance Kid is the sidekick of Butch Cassidy in Butch Cassidy and the Sundance Kid.
The Sundance Kid being behind a synthesizer would be very out of place.
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