Description
- The Teenage Engineering CH–8 Bogdan is a handcrafted wooden singing doll that combines art, sound, and interactive music control in a compact sculptural form. Made from solid beech wood with a removable rechargeable speaker module inside, it performs deep bass vocal parts either solo or as part of a larger choral system of up to 15 connected units via Bluetooth MIDI. It can be played through pre-programmed choral compositions or controlled in real time using devices like the OP–1 Field, OP–Z, or other BLE MIDI keyboards, with simple gesture controls such as tapping, tilting, or shaking to manage playback and volume. With its unique wood grain finish, 3–4 hours of battery life, and algorithm-driven choral repertoire based on counterpoint composition, the CH-8 blends traditional craft aesthetics with experimental digital music performance.

Full Choir in Formation
The CH–8 choir forms a fully connected ensemble, syncing into one unified system. Controlled via OP–1 Field, OP–Z, or any BLE MIDI keyboard, all eight figures perform together in perfect harmony as a single living choral instrument.

Tap, Tilt or Smack.
The CH–8 responds to touch and movement through built-in sensors—tap to play or pause, tilt to adjust volume, and a firm gesture to stop—turning each figure into a hands-on way to conduct the choir.

Crafted Wood, Modular Sound
Each CH–8 figure is crafted from solid beech wood with a hand-finished natural grain. Inside, a removable, rechargeable speaker module powers each performance, combining craft with modular design.

Compact Performance Engine
Each doll contains a central module that combines speaker, CPU, and BLE control in one unit. It’s rechargeable and delivers up to 4 hours of performance time.
- Solid beech wood construction
- Each unit features a unique natural wood grain pattern
- Hand-finished with hard wax oil for a refined surface
- Integrated internal speaker module
- Built-in CPU for audio processing and control
- Bluetooth LE MIDI connectivity for wireless performance
- Part of a multi-unit choral system (up to 15 dolls)
- Can perform solo or as part of an ensemble
- Pre-programmed choral music repertoire included
- Algorithm-based counterpoint composition system
- Bass vocal range (E2–C4, 82–261.6 Hz)
- Gesture-based control system
- Tap interaction triggers play or pause
- Tilt interaction adjusts volume
- Impact gesture stops playback
- Rechargeable internal speaker module
- Up to 3–4 hours of continuous performance time
- USB charging and firmware update support
- Compatible with OP–1 Field, OP–Z, and other BLE MIDI devices
- Synth Type: Desktop Synth Module
- Sound Generation: Digital
- Maximum Polyphony: Monophonic (Poly-Chaining Capable with Multiple Units)
- Built-In Effects: Reverb
- Built-In Speaker: Yes
- USB I/O: 1x USB-C (Internal Battery Charging, Update)
- Bluetooth: Yes (Audio, MIDI)
- Power Requirements: Built-In Rechargeable Battery
- Battery Type: 1x Built-In Rechargeable
- Color: Woodgrain
- Included Accessories: USB Cable
- Dimensions: 9.9 x 3.1 x 3.1″ / 252 x 80 x 80 mm
- Weight: 2.2 lb / 1006 g










