I'm sure plenty of us spent many an hour on the playground, inches away from full-on fisticuffs, debating the relative merits of the Sega Megadrive and the Super Nintendo. But here the two can finally co-exist, through the medium of song.
Back in the 16-bit days the sound of game music was very specific to each console, as a result of the different sound chips used in the hardware, but what Geckoyamori has done is rework famous game soundtracks using the elements of different sound chips.
Put simply - you can hear what Super Metroid would have sounded like had it been on the Sega Megadrive instead of the Super Nintendo.
Listening is a bit of a weird experience - like the reverse nostalgia from some parallel universe, where we all have ears for noses and it rains doughnuts.
Well worth a listen.