I've always liked the music in M1, and wondered why they got rid of in in the sequels.

Now I'm going to have to play marathon 1 again

I like it-- despite not being on a synth whateveritis, it sounds fitting. Very fitting.

If I have one suggestion, it's this: You tend to exaggerate your dynamics a bit-- I'd keep the volume just a touch steadier.

Also, nice to have you back