Tomoko Sauvage and Francesco Cavaliere's new collaborative album Viridescens is as aquatic and luminous as ambient music gets. It is packed with hypnotic and mesmerising alchemical sounds made from porcelain bowls, water sounds and an array of hydrophones. Despite its quiet, contemplative nature it is hugely absorbing. Otherworldly yet very real and organic, the drawn-out arrangements carefully and slowly unfold with real narrative and allow the design and craft of each sound to really resonate. The 9 minute 'Twin Emerald Dolphins' is a real highlight.