John Mellencamp’s “Someday The Rains Will Fall” will be prominently featured in tonight’s episode of NCIS. The track is available only on NCIS: The Official TV Soundtrack – Vol. 2. It was recorded at the Gunter Hotel in San Antonio, Texas, in the very same room that blues legend Robert Johnson recorded 16 songs in 1936. Mellencamp recorded the track facing the wall, exactly as Johnson did 73 years ago.