On the other hand, refining/tweaking over time may get you closer. I'm quite far down this road, having created a DAW of my own flavor.
It's absolutely not perfect, nor is it a production-level app or even clone, but I trust it for electronic music production because it, like many other programs, does the basics well.
That's another point worth making about the assets. They're a barrier as someone builds them over time. You might have 2000 (example) custom presets and audio file alterations in Ableton and use them as your "sound" as a producer.
Thinking names like Kaskade, Deadmau5, etc. Plenty of others.
Going back to the code, reverb is the example that illuminates the difficulty of cloning in my day-to-day. Sometimes quite explicit in songs, and sometimes hiding just enough in the background. But IMO - stands out immediately when it sounds "off" as I lack a better description.
Anyhow, here's my song from my DAW in case you're curious! Note that it's not mastered so you'll need to crank your volume somewhat.
Thanks for sharing the song. This is material proof that your program can generate a composition. Did you come up with some new ideas about how to create and produce?
Blending lots of ideas from other places (unsurprising I'm sure). I first used FL Studio, and am more recently an owner of Ableton. Some things I like and dislike about both, so what I tried to do with my app is blend what I like.
E.g. FL Studio = step sequencer. Ableton = more intuitive (I think) for whole song composition. Of course, now Live 13 has a Step Sequencer...
The other areas I'm exploring is sound design. One goal in this effort is to remove dependencies on other tools as much as possible. So every sound you heard in my song is from the app alone - not some external sample or other synth/VST tool.
So, then suppose you sit down with a blank slate and draw a wave. Preview it. Now add bits and pieces on top. But more of a visual design canvas rather than the Reason-style rack wiring.
PS: Thank you for checking out the song!