Maybe I wasn't clear with my definition of "random" for this purpose.
> The underlying driver… the trains locations are on a schedule.
> There are variations as trains run fast or slow or not at all. Even those events are results of causes.
> It might not be repeatable or predictable but it is not random.
It's not truly random in a philosophical sense, but it's unpredictable so it's random for us.
A coin toss is never truly random as it's just a piece of metal obeying the laws of physics as it flies through the air. As another example, let's say I make music out of SHA512 of fragments of this thread. Each would be technically predictable and reproducible, yet it would be completely random to us.
Without going deep into whether there's something "truly random" at all, we should acknowledge that the train schedule and all the causes for delays are completely opaque to us when we hear the music, thus making it random to us. Maybe it's different than calling rand() in a programming language. Maybe there are some regularities hidden into the noise. But for all intents and purposes it's random.
You can divide this art into several parts - the concept, the execution, and the actual output, i.e. the random (for us) music and the pretty UI. The concept may be novel, but it's not really wow-worthy. The execution is good, but that's technical. The random music and the UI are OK, but they're not that interesting by themselves, either, at least to me.
What I'm struggling with is why I can't appreciate this as others apparently do. Maybe combining the concept, the execution and the output (or however you want to slice the whole thing) is more than the sum of its parts. But to me the concept is enough. It's kinda funny, in a sense that it would hold my attention for a few seconds. The execution and the output are standard - what you'd expect from the concept. It's almost as if I asked a sufficiently advanced AI "make a page with sounds from different trains based on their schedule" or something similar.
I have only positive feelings for whoever made this, but if they'd made a 1000000-piece puzzle or just stacked 100000 rocks on top of each other, I'd still have the same feelings - "good jobs; glad you were able to take the time to do something you enjoy". And that's it. It's just executing an idea that itself is worth of a quick "hmm" and nothing more.