Here's Riley Calcago playing the tune quick slow so you can listen and learn—
Riley play old-aunt-johnny-with-her-nightcap-on-slow
And then Riley & papa Johnny rock the tune in this fast version on fiddle and guitar—
Old Aunt Jenny Rocks Out with Riley & Johnny
And here's a video of the music in the Key of G that we were taught in, played at 70% speed so you can "get it." Looks like it's the same sheet music, too.