Me too, this is a nice break from listening to GTA radio stations...
After hearing track 8, "Crawl Out Through the Fallout" by Sheldon Allman, I had to look it up...it sounds like it's from the right era, but the lyrics made me wonder if was a modern song, written and recorded in ye olde style just for the game...but fun fact, it's a real song from the 1960s.
Sheldon Allman (June 8, 1924 – January 22, 2002) was a Jewish American-born Canadian raised actor, singer, and songwriter.
In 1960, Allman released Folk Songs for the 21st Century, an album of novelty songs all revolving around science-fiction themes. The tongue-in-cheek material, which Allman wrote and arranged himself, included titles such as "Crawl Out Through The Fallout" and "Radioactive Mama." [1]
Radioactive Mama is the first song...holy tongue-in-cheek, love this shit.