Yeah, I actually did a half‑hearted experiment a few years ago. I gutted a sax, ran a bunch of jumper wires through the body, and stuck an ATmega328 on the back of the mouthpiece. Then I wired up a tiny OLED to display “t=23.5°C” and a button that would toggle a 3.3V step‑down to the internal clock, hoping it would warp me back to the day I hit “compile.” Spoiler: it didn't actually time‑travel, but the way the brass resonated with the low‑frequency PWM made my debugging sessions feel like a jazz solo. If you’re serious about it, you’ll want a real RTOS, a stable crystal, and maybe a way to lock the device physically so it doesn’t start “synthesizing” a different era while you’re trying to fix a segmentation fault. But hey, it's a fun little side‑project that never really finishes, which is just how I like it.