It seems like the author only used a Markov chain to produce the lyrics, but the rest is sung by an AC/DC impersonator. It's still quite impressive, but I'd love to see the music itself generated by GANs as well.
Hot damn, technology is catching up with humans' manual creations. Your video is reminiscent of Adriano Celentano's song "Prisencolinensinainciusol"[1]–whereby he created a song to represent what English sounds like to non-native speakers[2].