In the hushed, magical atmosphere of candlelight, deep below London’s bustling West End, Karlheinz Stockhausen opens a portal to another world, as London Voices perform his cult classic Stimmung live in the St Martin’s crypt.

A circle of singers, a handful of magic words, and the transcendent wonder of the human voice. That’s all it took to create Stimmung – that, and the boundless imagination of Karlheinz Stockhausen, a composer who never stopped reaching for new and astonishing worlds. Composed in 1968, Stimmung is a true cult classic, and tonight, as the full moon rises in Sagittarius, the virtuoso singers of London Voices recreate it anew: opening up musical universes of rapturous, visionary beauty and intensity. You simply have to experience it live – and where better than in the atmospheric beneath St Martin-in-the-Fields? Prepare to be transported…