The Super Mario World soundtrack has been remade without any compression. Using data from the Nintendo leak last year (which contained the original source code to Super Mario Advance), retro gamers have recreated uncompressed and lossless versions of the game's original soundtrack.
Since that Game Boy game reused samples from Super Mario World, people were able to use it to track down the uncompressed samples used in the original Super Nintendo Entertainment System (SNES) title.
Gamers have always considered there to be something not quite right about the Super Mario World’s soundtrack. Because of the limitations of the SNES hardware, music was often compressed, losing much of the wonder and nuance present in the original tracks.
Thanks to the work of intrepid restorationists and the Nintendo ‘gigaleak’ of data last year, we are now able to hear the original lossless and uncompressed tracks from Super Mario World.
The restoration project, which seems to be led by a Twitter user known as ‘The Brickster,’ found the original source code for Super Mario Advance in Nintendo’s 2020 data leak.
Using this information, The Brickster and others meticulously recreated the game’s soundtrack using the original synthesizers and instruments. The results are uncompressed and lossless versions of the famous tracks.