Stuart Brady a.k.a. zub after his deep investigation and research released few playlists containing original tracks which made protorypes for tunes in The Lyra II/III and Shock megademos by Polish group Ethanol Soft inc. (E.S.I.).
Here they are:
Shock: https://www.youtube.com/playlist?list=P ... OUTcUGlQrk
The Lyra II: https://www.youtube.com/playlist?list=P ... E5jwZAd07q
The Lyra III: https://www.youtube.com/playlist?list=P ... BbAwBDDwrP