In the early days of computing, computers couldn’t actually "play" music in the way we think of MP3s today. They didn't store audio recordings; they stored instructions. This is the realm of (Musical Instrument Digital Interface). A MIDI file is basically digital sheet music—it says "play Middle C, this loud, for this long."
: The sound set was licensed from and is based on their famous SoundCanvas (SC-55) windows default soundfont
In 2024 and beyond, the Windows Default Soundfont remains. Microsoft has not removed it, nor have they significantly improved it. Why? In the early days of computing, computers couldn’t