On Ancient Mechanisms, Londons LV dispense with the offbeat vocals of collaborators like Joshua Idehen and Okmalumkoolkat in favor of a different flavor: the enigmatic jazz piano trills of Armenian artist Tigran Hamasyan. Sometimes the duo places his nimble keystrokes over the futuristic and jazzy broken-beat rhythms that are their signature (Hammers and Roses, Jump and Reach), but tracks like mysterious mover Dar Souiri, the rainy-day Detent, and the lushly layered Infinite Spring explore more unusual ambient possibilities.