Why is there such a strong connection between surfing and music? 

Is it the downtime waiting for the swell to pick up that gives you time for jotting down sandy lyrics? Is it the rhythm and timing needed to ride that wave? 

The Beach Boys sang about surf culture. Jack Johnson started out as a competitive surfer. Jimmy Buffett even enjoyed a surf.

Blues and roots musician Ash Grunwald has thought about this deeply - writing, podcasting and singing about it.