diff --git a/strudel/20250728.md b/strudel/20250728.md
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+```javascript
+setcps(136/60/2)
+
+$_:sound("loop:4").slow(4).gain(0.2)
+  .slice(8,"0 1 0 [1 3]")
+  .lpf(sine.range(900,2400).slow(16))
+
+$:xfade(
+sound("loop:3").slow(4).gain(0.3)
+  .slice(8,"<0 1 2 3> [3|2|1|0]".slow(4)).clip(1.2).lpf(800)
+  .lpq(perlin.range(5,20).slow(4)),
+  slider(0.537,0,1),
+sound("loop:5").slow(4).gain(0.4)
+  .slice(8,"0 [1|2|3|0]".slow(2)).clip(1.2)
+  .lpf(tri.range(900,3000).slow(8)).room(0.7),
+).postgain(0.01)
+```
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