This is a little something I cooked up just out of pure boredom. This resource pack replaces nearly every single song in the game with a piano-style remix by Sheet Music Boss.
(Keep in mind as SMB hasn't covered the 1.18 tracks yet, I replaced them with other piano remixes by other artists, such as Infinite Amethyst.)
This is a decent-sized resource pack (335 MB to be exact), so it may take a while to load on a slower PC.