All samples were from my own Mechsounds sample pack, then adjusted through Vitalium with a few effects.
My current process involves jamming out using Bespoke Synth as a plugin host (playing Vitalium in this case),
and then recording the output. I then cut small parts of that recording into samples where sequenced in OpenMPT.
I then reversed the intro in Audacity for the final version.
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_software: OpenMPT, Vitalium, Audacity
_samples-used: Mechsounds
_download: submenu.wav
_project: submenu-SOURCE.zip
_license: public-domain / cc0