I’d never encountered a Hang before; it’s a musical instrument, two steel pans fused together that produces sound through Helmholtz resonance when tapped. (Helmholtz resonance is the same type of sound produced by blowing over the top of a glass bottle.) The sounds it produces are amazing: percussive but also melodic, impactful but also resonant and lingering.

This mesmerising duet between Hang players Danny Cudd and Markus Johansson – AKA the Hang Massive – is a great example of what it can do.