diff --git a/strudel/20250812.md b/strudel/Slow sine.md
similarity index 72%
rename from strudel/20250812.md
rename to strudel/Slow sine.md
index 1f66b8a..234d894 100644
--- a/strudel/20250812.md
+++ b/strudel/Slow sine.md	
@@ -83,4 +83,40 @@ $:base.postgain(0.2).fast(4).decay(2).lpenv(2)
 $:base.postgain(0.2).fast(1).decay(1)
   .lpf(perlin.range(100,800).fast(7)).lpq(20).phaser(2)
 all(x=>x._scope()
+```
+```javascript
+setcps(60/60/4)
+
+const base = stack(
+  stack(
+  note("<a1 f1 c2 g1>").sound("saw"),
+  note("<a2 f2 c3 g2>").sound("saw").gain(0.5),
+  note("<e3 c3 g3 d3>").sound("saw").gain(0.25),
+  note("<c4 a3 e4 b3>").sound("saw").gain(0.15)
+  ).pan(sine.range(-0.4, 0.4).slow(8)),
+  note("<[e5 c5] [c5 g5] [g5 d5] [d5 a5]>")
+  .sometimes(x=>x.rev())
+  .fast(1.5).sound("sqr")
+  .late("<1 1.25 0.75 1.125>")  
+  .early("<0 0.05 -0.05 0.02>") 
+  .gain(perlin.range(0.15,0.5).slow(4)).pan("-0.8|0.8")
+)
+
+$:base
+  .transpose("<0 2 7 5 12 0>".slow(2))
+  .lpf(tri.range(300,400)).lpq(10)
+  .sometimesBy(0.4,x=>x.mask("0"))
+$:base.slow(2)
+  .lpf(600).lpq(10).phaser(1.2).ply(4)
+  .hpf(sine.range(80,120).slow(16)) 
+  .sometimesBy(0.2,x=>x.mask("0"))
+$:base.fast(1.5)
+  .lpf(sine.range(200,300).slow(2)).lpq(15)
+  .sometimesBy(0.3,x=>x.mask("0"))
+$:base.fast(4)
+  .lpf(perlin.range(300,400).fast(16)).lpq(15)
+  .sometimesBy(0.3,x=>x.mask("0"))
+
+all(x=>x.room(1/4).dist(0.05).postgain(1/4))
+
 ```
\ No newline at end of file