Teenage Engineering OP-Z Wireless Bluetooth Multimedia Synthesizer and Sequencer with MIDI Connection and Photomatic Function - Compatible with Mac, iOS, and Android Devices | Reverb
The OP-Z sequencer is insanely powerful, but is it worth it? - 9to5Mac
Amazon.com: teenage engineering OP-Z portable synthesizer and multimedia sequencer with wireless bluetooth connection - compatible with unity game engine, mac, ios, and android devices : Musical Instruments