The Fourth Symphony emerged during the First World War, a time when the world was disintegrating, and national feelings turned into a destructive force. Despite these internal and external challenges, Nielsen produced his grandest and most audacious work, ‘The Inextinguishable,’ a title that hints at the primal will to live, a force only fully expressed through the music itself. Premiered a few weeks after its completion, ‘The Inextinguishable’ was hailed as a monumental masterpiece that reached great heights, a critical acclaim that remains valid, affirming the enduring impact and relevance of Nielsen’s magnum opus.