Nashville Anthems: Dissecting 80s & 90s Country Music

Dissecting "Mirror, Mirror" by Diamond Rio

Diamond Rio restacks the harmony and dishes out the twang in their 1991 hit "Mirror, Mirror". Everyone's delivering blue notes on this one, but how do the lyrics and tonality suggest something darkly humorous about the singer's hardluck introspection? (Also, what exactly is the Mandela Effect?)