I think you achieved the intended vibes pretty well. The main thing I would say is that the velocities could use more variation (rhythm+magnitude) instead of being almost completely flat+quantized, so that the notes sound less robotic.
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On
"City Theme", the marimba is most noticeably robotic, though the composition is nice.
"Evil Team Base", while a good idea, is pretty muddy. The low instrument notes have long releases, so they smear together and create a wash around 200 Hz, reducing the clarity of each note.
"The Abandoned Town" has a good composition, and I like the intentional lofi character of the soundscape, but as in the other tracks, consider varying the velocity magnitudes to make the notes less robotic. You could also automate the volume on the strings to make them more dynamic.
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If you have about 4 hours free time, I think it would be a good idea if you checked out this livestream (
part 1,
part 2); it may help you learn how to build soundscapes and make
free samples sound
more expressive. I learn a lot from this guy, and maybe you can too. :)