diff --git a/sclang-play/tutorial.sc b/sclang-play/tutorial.sc
index 8cbdc3d..9c27eeb 100644
--- a/sclang-play/tutorial.sc
+++ b/sclang-play/tutorial.sc
@@ -424,3 +424,111 @@
   // b.free;
   // c.free;
 )
+
+(
+  SynthDef(
+    \tutorial_DecaySin2,
+    {
+      |outBus = 0, effectBus, direct = 0.5, freq = 440|
+      var source;
+      source = Pan2.ar(
+        Decay2.ar(
+          Impulse.ar(
+            Rand(0.3, 1),
+            0,
+            0.125
+          ),
+          0.3,
+          1,
+          SinOsc.ar(
+            SinOsc.kr(0.2, 0, 110, freq)
+          )
+        ),
+        Rand(-1.0, 1.0)
+      );
+      Out.ar(outBus, source * direct);
+      Out.ar(effectBus, source * (1 - direct));
+    }
+  ).add;
+
+  SynthDef(
+    \tutorial_Reverb2,
+    {
+      |outBus = 0, inBus|
+      var input;
+      input = In.ar(inBus, 2);
+      16.do({
+        input = AllpassC.ar(input, 0.04, Rand(0.001, 0.04), 3)
+      });
+      Out.ar(outBus, input);
+    }
+  ).add;
+
+  ~sources = Group.new;
+  ~effects = Group.after(~sources);
+  ~bus = Bus.audio(s, 2);
+
+  x = Synth(
+    \tutorial_Reverb2,
+    [\inBus, b],
+    ~effects
+  );
+
+  y = Synth(
+    \tutorial_DecaySin2,
+    [\effectBus, ~bus, \outBus, 0],
+    ~sources
+  );
+
+  z = Synth(
+    \tutorial_DecaySin2,
+    [\effectBus, ~bus, \outBus, 0, \freq, 660],
+    ~sources
+  );
+
+  /*
+  ~sources.free;
+  ~effects.free;
+  ~bus.free;
+
+  currentEnvironment.clear;
+  */
+)
+
+(
+  g = Group.new;
+  h = Group.head(g);
+  x = Synth.tail(h, \default);
+  s.queryAllNodes;
+)
+
+(
+  Server.default.boot;
+  a = Synth.new(\default);
+  a.group;
+)
+
+(
+  {
+    SinOsc.ar(mul: 0.2)
+  }.scope(1);
+
+  s.queryAllNodes;
+)
+
+(
+  g = Group.new;
+
+  4.do({
+    {
+      |amp = 0.1|
+      Pan2.ar(
+        SinOsc.ar(440 + 110.rand, 0, amp),
+        1.0.rand2
+      )
+    }.play(g);
+  });
+
+  g.set(\amp, 0.005);
+  // g.free;
+)