The Broadway musical Big River was based on The Adventures of Huckleberry Finn by Mark Twain, and won a Tony Award for Best Musical in 1985. (If one of the too-infrequent revival productions stops in your town, don’t miss it!)
The exuberant song Muddy River comes in Act One, when Huck offers to help Jim reach the North and gain freedom from slavery. With a posse in hot pursuit, they shove off on their raft onto the mighty Mississippi.
Look out for me, oh muddy water
your mysteries are deep and wide
and I got a need for going someplace
and I got a need to climb upon your back and ride