It's not that they can be played at the same time without tangling, it's that all the chord changes, key changes, bridges, breakdowns, swells, pauses, are in the same place. If you could draw a topographical map of a song, it'd be the same for both songs. It gave the impression that these were being very cynically and mechanically produced.
Oddly, I still enjoyed it.
Also, you can do the same with Sesame Street and James Bond theme music.
It's not that they can be played at the same time without tangling, it's that all the chord changes, key changes, bridges, breakdowns, swells, pauses, are in the same place. If you could draw a topographical map of a song, it'd be the same for both songs. It gave the impression that these were being very cynically and mechanically produced.