With the news this week that Leonardo DiCaprio is going to play Sam Phillips in a movie based on Peter Guralnick's 2015 book "Sam Phillips: The Man Who Invented Rock 'n' Roll," we thought it appropriate to remind Dad Rock Nation of the chat we had with Peter.

'Tuesdays With Mary'/'Tuesdays With(out) Mary' is a weekly feature of Dad Rock, a music podcast from the USA TODAY Network. Subscribe to Dad Rock on iTunes and please rate/review us — it helps more people discover the show! You can also stream or download the show on SoundCloud, Stitcher, TuneIn or AudioBoom.

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