Yes it is defiantly the yodel in this song that grabs you, even if it shocks or even amuses you at first, it will entrance you to listen.  What a great song.  If you want to hear the whole thing, scroll down a little and it is on the black BOX on the left.  Happy Birthday Hank Williams Sr.  September 17, 1923  to January 1, 1953.  Thanks to Gatorrocks786 for a very good video.