Descent Soundtrack: Mercury Solar Lab [Extended Version] 

Now that I've listened to both, I DO notice the similarity! Good ear, my friend.

In the MAC version, this song, "Not That Button!" was used in Level 6 - Mercury Solar Lab, but in the Playstation version, this song was used on Level 4 - Venus Atmospheric Lab. Level 6 PSX used "Primitive Rage" (the remix of the Descent title screen music).

the mac had this music too. Also, is it just me or is that high pitched droning sound from the beginning of Rob Zombie's "Ratfinks, Suicide Tanks, Cannibal Girls" o.O