A demo one of my professors used to show was:<p>Bob Wills (damn, that pedal steel...): <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=ZFef08YZ6qk" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=ZFef08YZ6qk</a><p>Chuck Berry: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=8RAfxiyMKAk" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=8RAfxiyMKAk</a><p>Wikipedia cites Wills&#x27; 1938 recording as the source, but it&#x27;s fun to have the video. I totally believe Berry referenced Bill Monroe, I mean, Elvis&#x27; Blue Moon of Kentucky is a direct cover of a Bill Monroe tune. It&#x27;s also thought that Scotty Moore&#x27;s guitar style on Elvis&#x27; early singles was influenced heavily by Merle Travis&#x27; playing style (&quot;Travis Picking&quot; also see <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=N8vOTKMqzw4" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=N8vOTKMqzw4</a>).