If you simply want to listen to MIDI files using the Sonic 2 audio engine, VLC allows you to load a custom soundfont in its audio settings. Step-by-Step Setup Guide
If you grew up in the 90s, the sound of Sonic the Hedgehog 2 is permanently etched into your brain. The punchy snare of Chemical Plant Zone, the slap bass of Mystic Cave, and the soaring leads of the Oil Ocean theme weren’t just background music—they were a masterclass in FM synthesis and sample-based sequencing. sonic 2 soundfont portable
To make the soundfont truly sound like Sonic 2, you may need to apply post-processing, especially if you used the "clean" extracted samples. If you simply want to listen to MIDI
A soundfont (typically in .sf2 or .sf3 format) is a file that contains recorded audio samples mapped to MIDI notes. In the case of Sonic 2 , developers ripped the individual instrument patches—such as the famous slap bass, crunchy synth brass, and iconic snare drums—directly from the game's ROM. To make the soundfont truly sound like Sonic
The "portable" aspect usually highlights the ability to use these files on mobile devices or via lightweight, "no-install" software: