Just buy every JLL CD you can get your hands on, and listen to NOTHING else for about a month. Day and night, all Jerry Lee, all the time!
If you don't 'get it' by then, you never will... If you have to rely on transcriptions as a substitute for listening and working things out yourself, this one may be beyond you.
Steep yourself in the source, and what he does should come naturally.
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An arranger is just a tool. What matters is what you build with it..!