The Arid OST was composed by Flavio Cangialosi, and it features 12 tracks with a smooth and ambient mood. The music was made with a minimal approach, in order to blend with the wind and the atmosphere of the most ostile desert in the world. The sound was inspired by the ancient instruments and rituals of the Atacameño culture, mixed with a modern way of working with the sound.

Some of the most curious instruments played in Arid:
- Chalumeau, Psaltery, Kantele, Isigubhu, Prepared Piano and Double Bass, Ehru, Karimba, Morin Khuur, performed by the composer.
- Cello performed by Claudio Aiello

Available in FLAC and MP3 320 kbps formats.