For this song I wanted to use samples longer than the OP-Z can handle. I downloaded a royalty free cello sample and loaded it into the OP-1.
Synchronizing the OP-1 with the OP-Z is simple, you just need to use a cable I nicknamed "time traveler" — on one end it's mini USB and the other end it's USB-C. Once they're connected this way, pressing play on one of them will make the other start playing as well, and they will keep playing in sync.
I had a problem with hum noise, though. Since the OP-1 and the OP-Z were both connected to the mixer, connecting them with the time traveler cable created a ground loop. I had to disable USB charging in both devices to get rid of the noise, but once I discovered that everything worked perfectly.
The cello samples from the OP-1 are going through my "sway" patch on the ZOIA, slowly changing between different effects (delay, reverb, compression, bit crusher). I had the sample playing on loop, and adjusted its volumne on the fly while recording a one-take session.
Please keep your comments respectful, honest, and constructive. Please focus on the song and not the demo.