Lo-fi ambient noise due Tropa Macaca have their fourth album, Ectoplasma (artwork above), coming out on August 20 via Software, Joel Ford and Dan Lopatin's label.

And it's a characteristically leftfield affair - ahead of the release, we've got a preview of what André Abel and Joana da Conceição will be releasing to us, and what they do when they go for a walk near the seaside. Say the duo:

"Men would put the sugar cane broth in a pan and put it on the fire. They couldn’t stop moving it until a creamy consistence occurred. They couldn’t stop moving it until a creamy consistence occurred. They couldn’t stop moving it. A movement of repetition, a gesture of renewed conviction everytime you begin the sentence because it has just ended to begin again - they couldn’t stop moving it - is a pray for silence. Silence enshrines, treasures, Talk wastes, fritters."

Now, bearing that in mind, watch away: