The Seattle duo Bell Witch have made extreme slowness an art in itself. Since their beginnings, the bass-and-drums outfit have explored the depths of funeral doom, that subgenre where the tempo drags at the edge of stillness and every note seems to weigh a ton. The Clandestine Gate, the first part of an announced trilogy, radicalises the approach further still: a single composition of more than eighty minutes, conceived as an uninterrupted flow.

The critics (an 84 average across eight reviews) hail a work of measureless ambition, where patience becomes a condition of listening. One must agree to be carried along, to abandon every temporal marker, for the piece to reveal its underground logic: that of a slow ascent toward the light, a dawn wrested from the darkness.

Musically, Bell Witch weave their textures from almost nothing: a deep, saturated bass, funereal organ swells, clean vocals that surge like apparitions, drum strikes spaced out like slowed heartbeats. Silence plays a role as great as sound.

This formal radicalism has its downside: The Clandestine Gate demands total commitment and refuses any distracted listening. Whoever seeks immediacy will move on. But whoever accepts the immersion discovers a near-liturgical experience of grave and rare beauty.

Verdict: 8.5/10. A monolithic, meditative work that pushes the limits of duration and slowness in the service of a muted, lasting emotion.