Teenage Engineering Choir Bogdan Cossack Bass

Teenage Engineering's CH–8 Bogdan is a wooden singing doll engineered as a standalone musical instrument and ensemble performer. Carved from solid beech and fitted with an internal speaker module, Bogdan functions as a bass vocalist capable of executing pre–composed arrangements or responding to MIDI control. The Choir series represents a distinctive approach to generative and sequenced music–making, where each doll operates as an independent voice.

Bogdan measures 90 × 90 × 264 mm and weighs 1036 g, with a deep bass vocal range suited to harmonic foundation roles. The instrument delivers 3–4 hours of continuous playback on a single charge and connects via Bluetooth LE, allowing synchronisation with up to 15 companion dolls simultaneously. MIDI keyboard integration and ortho remote support provide real–time control over start, stop, and volume. Each wooden unit exhibits a unique grain pattern; construction materials and internal architecture are optimised for acoustic resonance.

Bogdan integrates with Teenage Engineering's own hardware ecosystem—the OP–1 field and OP–Z sequencers accept MIDI output to trigger and modulate the doll's vocal performance. Pairing multiple choir members enables layered harmonic textures, from solo demonstration tracks to dense polyphonic arrangements. This architecture suits composers exploring algorithmic composition, installations requiring autonomous sound generation, and performers seeking unconventional ensemble textures beyond traditional synthesis.

Features

• Bass vocal range; deep harmonic character for foundational voice layers.
• Solid beech construction with internal speaker module and unique wood grain.
• 3–4 hours continuous singing time per charge cycle.
• MIDI keyboard compatible; works with OP–1 field, OP–Z, and standard controllers.
• Bluetooth LE multi–doll sync; pair up to 15 choir members simultaneously.
• Dimensions: 90 × 90 × 264 mm (3.6 × 3.6 × 10.4 inches).
• Weight: 1036 g (36.6 oz) per unit.
• Start/stop and volume control via ortho remote or connected MIDI surface.