"World Tree" has no lyric argument in the available evidence, so its meaning comes from title, form, and motion. The title gives the piece a vertical image, but the music does not paint it with spectacle. It makes rootedness audible as a repeated walk: steady pulse, low center, bright surface, and small changes returning to the same ground.

That is why the long middle matters. From about 2:15, the track makes endurance feel active. It grows by keeping the pattern, thickening the weight, and letting small surface changes branch from a stable center. After 5:28, the stride loosens; after 5:54, the terminal quiet removes the pulse almost completely. The piece leaves the body still waiting for the next step. Its meaning is not escape from the root, but trust in a path that becomes visible only when it is taken away.