Tromleorkestret's music machine breathing fire on stage at Byggefestivalen

Christiania · Since 2012

Tromleorkestret

The firebreathing music machine.

Watch it play Book the machine

Byggefestivalen 2025 · Photo: Pato Soto

Two people and a homebuilt music machine. Robots play the bass, the keyboard, the drums and the xylophone. We play the rest, and the flamethrowers fire in time with the music.

Flames bursting from the machine behind Hjalte in his top hat

A blue flame rising next to Hjalte at the machine

Sofie playing the Aeolynth, backlit at dusk

See it live

MoonWolf

Recorded live at Karrusel Festival 2025.

The music machine under a striped circus tent

The Machine

A music machine on wheels

We built the machine ourselves, and it is never finished: we have been working on it since 2012. It has a robotic slide bass, a mechanical xylophone, drums and keyboard, a percussion instrument made of amplified springs, and flamethrowers that fire in sync with the music. A pair of gloves controls the sound wirelessly, with live effects from reversers to granular spaces.

See the instruments

The Robotic Slide Bass

A four-string bass played by sliders and picks on motors.

The Automated Keyboard

A keyboard with an actuator under every key.

Mechanic Drum Ensemble

Drum, tambourine, cabasa and frog guiro, played by actuators and solenoids.

The Autonomous Xylophone

A xylophone with a solenoid for every bar.

The Aeolynth

A wind synth with touch keys that can play chords.

Sound Gloves

Gloves that control the live effects wirelessly.

SynthArmor

A synthesizer worn on the arm, played with breath, buttons and knobs.

The Springs

Salvaged springs, amplified and played as percussion.

The Sonimba

A kalimba with pickups, sensors and live processing.

Listen

Krautrock, psychedelic jazz and experimental electronic music

All music

On the road

Upcoming shows

06 Nov 2026
Fredericia Art Festival Eksercerhuset · Fredericia · 17:00
Info

All shows

For organisers

Press kit

The booking sheet and the technical rider as PDFs.

First page of the Booking Sheet

Booking Sheet

Two pages about us, the machine and the show, with photos, past shows and the rider in short.

First page of the Technical Rider

Technical Rider

Stage, power, sound, lighting and fire-safety requirements for a standard show.