Bliss was inspired by a 2010 study suggesting that Alzheimer’s patients have an easier time remembering information when it’s placed in the context of music. What makes it unique isn’t that Kirby resuscitates old but vaguely familiar source material; it’s how he edits it. Several of the tracks here take pretty, anodyne phrases and loop them mindlessly; several stop in what feels like mid-thought; several reach back and then jump forward. They never feel filled-in from start to finish, and they tend to linger on moments that feel especially comforting or conclusive: the last flourishes of a song, maybe, the pat on the shoulder, the part when we’re assured everything is drawing to a close. Kirby isn’t just making nostalgic music, he’s making music that mimics the fragmented and inconclusive ways our memories work.