Crystal Castles have an uneasy relationship with coherence. On latest album III, that’s to the shrill electronic duo’s detriment, as their former euphoric gloom at times resolves into forbidding murk. Eurodance-pulsing “Sad Eyes” is the closest the record gets to the pop jugular, though its Auto-Tune eeriness remains just out of reach. The song’s new analogue-textured video intersperses performance footage with enigmatic footage of masked people kissing, and at one point nearly reenacts the globally significant album cover art as a post-party reveler leaning for support. Looking into Alice Glass’ eyes, the sadness is hard to detect.