[From Wikipedia] “Where Did You Sleep Last Night?” is a traditional American folk song which dates back to at least the 1870s, and is believed to be Southern Appalachian in origin. The identity of the song's author is unknown, but it has been recorded by many artists in numerous genres. Traditionally, it is most often associated with the American folk and blues musician Lead Belly, who recorded several versions in the 1940s, as well as the American bluegrass musician Bill Monroe, who helped popularize the song (in a different variant, featuring lyrics about a train) among bluegrass and country audiences with his versions recorded in the 1940s and 1950s.
The song, performed by The Four Pennies, reached the UK top twenty in 1964. A live rendering by the American alternative rock band Nirvana, which reinterpreted Lead Belly's version and was recorded during their MTV Unplugged performance in 1993, helped introduce the song to a new generation.
Give it a listen. The Lead Belly and Nirvana versions are my favorites.
To find the cache, go to the posted coordinates. Face 337 degrees and walk approximately 40 meters. You'll know you are going the right direction when you see the answer to the song title as described in the song.