John Muir Suite:
Hymn
to the Wilderness (iTunes link)
A
Mountaineer's Prayer
(iTunes link)
These two songs, part of the musician's John Muir Suite, are included on the 2003 album Trails Plowed Under, Legends of the West by Dan Thomasma and Terry Yazzolino.
The first song of the John Muir Suite, Hymn to the Wilderness uses direct quotations from John Muir as the lyrics. The refrain is the famous "Climb the mountains...." quote.
The second song of the John Muir Suite, A Mountaineer's Prayer also uses quotes from Muir, evoking the spirit of the wilderness, its silence and mystery.