By now, it isn’t news that Osaka’s 99Letters has expanded beyond the initial chiptune-fury of his early years towards something heading off in other directions too — he’s released whole albums of slightly uneasy house music, and has shown a stylistic hopping. Still, “Mind A” is the most relaxed I think I’ve heard the producer, at least in quite some time. It is an easy going number, one that sounds almost crystalline, save for some pecking going on in the back that adds the necessary strokes of tension. Yet even at its most fierce, it is simply a bounce to soak up. Listen above.