Alright, so today I wanna talk about this thing, “J Cavalli.” Not the fashion guy, no. This was some weird, old piece of software I stumbled upon a while back, and man, what a ride that was.

I was digging through some ancient forums, you know, the kind that look like they haven’t been updated since 2003. I was looking for some different ways to make visuals for a little music project I was messing with. And then, boom, someone mentioned “J Cavalli.” The post was super vague, just said it could make “interesting patterns” and was “a bit of a beast to tame.” Challenge accepted, right?
So, first things first, finding this J Cavalli thing was a quest in itself. No official website, obviously. Just some dusty links to a zip file on some forgotten server. I finally got my hands on it, and it was just a mess of files. No readme to speak of, just a couple of example scripts with names like `test_*` and `run_me_*`. Classic.
Getting it to even run was the next hurdle. It clearly wanted some ancient version of… something. I spent a good few hours just trying to figure out its dependencies. It was like a digital archaeologist, sifting through error messages. I almost gave up, not gonna lie. I was close to just chucking the whole idea.
But then, after tweaking some config file for like the hundredth time, one of the examples flickered to life. And wow. It was… something. The graphics were super lo-fi, almost primitive, but they had this weird, hypnotic quality. Not polished, but definitely unique.
So, I thought, okay, I can work with this. I wanted to feed it my own parameters, make it react to my music. This is where the real “fun” began. Since there was no documentation, it was all trial and error. Mostly error.

- Change one tiny number? Crash.
- Load a slightly different type of input? Total meltdown.
- Look at it funny? Seemed like it would just give up.
I spent days, man, just poking at it. It felt like I was trying to communicate with an alien. I’d make a small change, run it, see what happened, and try to learn. Most of the time, what happened was nothing good. My screen was a graveyard of error dialogues and corrupted visuals.
There was this one evening, I was about ready to throw my monitor out the window. I’d been trying to get a specific pulsing effect to sync up. And then, just randomly, I tried combining two commands I thought were totally unrelated. And it worked! Suddenly, the whole thing just clicked into place. It wasn’t perfect, but it was my visual, reacting, pulsing. It was a proper eureka moment, you know?
In the end, I managed to create a short visual loop using J Cavalli for my track. It’s raw, it’s glitchy, and it probably looks ancient to anyone else. But for me, it was a victory. I actually tamed a little bit of that beast.
So, yeah, J Cavalli. Would I recommend it? Probably not to anyone sane. It was frustrating, time-consuming, and obtuse. But, and this is a big but, there was something really satisfying about wrestling with it and getting something, anything, out of it. It’s like those old bikes you have to kickstart a dozen times, but when they finally roar to life, it’s all worth it. For a little while, anyway. Definitely a memorable little detour in my project adventures.