For three early-summer days in May 2025, Polygon Live LDN brought its fully immersive spatial audio sound system to Crystal Palace Park. After many years at Wonderfruit festival in Thailand, and events in Amsterdam, Singapore and Saudi Arabia, this was Polygon’s UK debut — and it did not disappoint. 

Since its inception, Polygon has depended on industry-leading sound company L-Acoustics for all its spatial audio needs. Here's how the technology works in practice.

London-based pianist and composer Belle Chen has won Polygon's emerging artist contest.