For some music for how it could <i>sound</i> to take a keel boat up the Missouri River in the early 1800s from Saint Louis all the way to the Grand Tetons:<p><a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=Y6_Jr_Y5FrA" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=Y6_Jr_Y5FrA</a><p>that is, the music from the movie <i>The Big Sky</i>.  So, right, the music is by Dimitri Tiomkin.