The full score and parts for these works are held in the orchestral library of the Royal Stockholm Philharmonic Orchestra, Konserthuset, Stockholm

There are four scores in this set, entitled:

1. Main Siren - Slow (4x5)

2. 17 Klaxon Harmonies

3. Polyrhythmia 

4. Infinite Canon

They were recorded by the orchestra at Konserthuset, Stockholm in October 2023, and were subsequently installed by way of a custom-built sound system inside a working ambulance shortly thereafter. The sound system is integrated with the ambulance's siren system, such that the music is triggered in the ambulance interior whenever the siren is activated. The aim being to place the siren within a harmonic musical context and foundation - thereby softening and smoothing out its impact when heard inside the vehicle.

The work 'Polyrhymia' was premiered by the orchestra for a live audience, at a concert as part of Philharmonic Day, on Saturday 11th January 2025.