YouTuber Ultra Choice has been doing some excellent OP-Z videos. His latest is an in depth tutorial on using the OP-Z as an 8-track sequencer for iPad apps. This starts off hand-held while he's covering all of the connections, but he switches to a tripod when the tutorial begins at 7:00. He's also taken my advice and presents this tutorial with direct audio so you can hear just how gorgeous it all sounds!
This is an in depth tutorial for using the Teenage Engineering OP-Z as an 8 track Bluetooth MIDI sequencer for AUM on iPad. I am using the OP-Z, along with the Korg nanoKontrol 2, Arturia Keystep, and Native Instruments Komplete Audio 6. You can do most of what I do with just the iPad and the OP-Z if you need a more portable setup and are okay with controlling faders in AUM using touch / inputting MIDI via the Z’s button keys. I do this all the time and it is awesome.
This video goes over configuring Audio Unit V3s and inter-app audio apps in AUM to be controlled by the OP-Z over Bluetooth MIDI. I also cover connecting the Korg nanoKontrol 2 to AUM to control faders and a low-pass filter. The Keystep is providing MIDI into the Z, and is powered by the Z’s internal battery. This will shorten the battery life when doing this.