I found the lyrics to the song, but I can't find the sheet music or even the chords anywhere.

Chorus:
Rim rim under the red rock rim... under the red rock rim...

Nary a star shines down ♪..Down in the ground she lies ♪ ♪ under an earthly mound ♪ ♪ that's where her spirit lies ♪ ♪ rim, rim, under the red rock rim ♪   ♪ under the red rock rim ♪

Chorus:

She was young, so fair ♪ ♪ cheated and lied, you see ♪ ♪ so with a deadly care ♪ ♪ he set her spirit free ♪ ♪ rim, rim, under the red rock rim ♪ ♪ under the red rock rim ♪ Now every night he rides ♪ ♪ to that deserted place ♪ ♪ there in the sands so white ♪ ♪ to see her face ♪ Rim, rim ♪ ♪ under the red rock rim ♪ ♪ under the red rock rim

Chorus:

Lonely as he can be ♪ ♪ riding on endlessly ♪ ♪ lonely as he can be ♪ ♪ his spirit never free ♪ ♪ rim, rim ♪ ♪ under the red rock rim ♪ ♪ under the red rock rim ♪

Rim, rim That's where to look for him ♪ ♪ rim, rim ♪ ♪ that's where to look for him ♪ ♪ that's where to look for him ♪♪ ♪ under the red rock rim