Here are the Ultima Underworld I MIDI files. They sound best in a 32 Voice sound card or better.
However, some music are designed for the 22x port sound cards, which is Midi Synthesis.
Composition by: "The Fatman" George Alistair Sanger, Dave Govett
(Update 2020s: You need to use Internet Explorer for this page as modern browsers don't support in-browser native midi file playback)
Click 'n' play the music you want:
Download the whole collection.