Just as our collective memory of the sunny, simple 50s was built on hidden oppression and repression, these goofy 50s pop songs conceal surprisingly sharp edges. “Diamonds Are A Girl’s Best Friend” is a savage capitalist satire, Peggy Lee and Rosemary Clooney try on some questionable accents, and “Baby It’s Cold Outside” is still provocative 70 years later. Meanwhile, Les Paul’s electric guitar experiments were a key antecedent for the mold-shattering rock music to come.