What's the epic song from dune?

You know the one! When they give him that spade on a stick and they're like GO CATCH A WORM and he's like OK! and he goes and then he stabs it with the spade and gets on and everyone joins him and they're like YEAHHH and the music is like BABABAOWWWW DAN DAN DANNNNN and has that sweet guitar and the singing. What is that? It's not on the OST.