UFS 1 - Unidentified Forms of Sound is a compilation on CD, released on YoYo Records (YOYO24) in 1999.
The CD collects 8 tracks from 6 artists, having Infected Mushroom featuring three tracks. 7 tracks are exclusive to this release: "Montoya" by Infected Mushroom, "Tango Electro (Space Cat Remix)" by Tripster, "Unearthly Song" by Clockwork, "Genetic Wobble" by Domestic, "Monoploys" by Paranoize (2) and 2 more. Its track "" by Space Cat, first released in 1998, is a scene classic, appearing on 5 releases across the archive.
- 01Infected Mushroom — Montoya
- 02Tripster — Tango Electro (Space Cat Remix)
- 03Clockwork — Unearthly Song
- 04Domestic — Genetic Wobble
- 05Paranoize (2) — Monoploys
- 06Infected Mushroom — Devil (Final Remix)
- 07Space Cat — Kreak
- 08Infected Mushroom — Elm...
