Watch the Oh Daddy, That’s Good! 4 online guitar lesson by Tim Sparks from Post-Modern Fingerstyle Blues
The second theme has a 6/8 feel before dropping back to 4/4 using the Biaio pattern. It's followed by a vamp with modal improvisation using the Middle Eastern "Saz" style. A steady pulse on the open D string provides a nice rhythmic support for a lead line along the first and second strings in Hungarian mode.