diff --git a/smnp/environment/factory.py b/smnp/environment/factory.py
index 95cbf0b..deb4891 100644
--- a/smnp/environment/factory.py
+++ b/smnp/environment/factory.py
@@ -10,6 +10,7 @@ from smnp.library.function.octave import withOctave
 from smnp.library.function.rand import random
 from smnp.library.function.semitones import semitones
 from smnp.library.function.sleep import sleep
+from smnp.library.function.synth import synth
 from smnp.library.function.tuplet import tuplet
 from smnp.library.function.type import objectType
 
@@ -26,7 +27,8 @@ def createEnvironment():
         flat,
         wait,
         random,
-        tuplet
+        tuplet,
+        synth
     ]
 
     methods = [
diff --git a/smnp/library/function/synth.py b/smnp/library/function/synth.py
index a6239af..ca954fd 100644
--- a/smnp/library/function/synth.py
+++ b/smnp/library/function/synth.py
@@ -1,6 +1,28 @@
+from smnp.library.model import CombinedFunction, Function
+from smnp.library.signature import varargSignature, ofTypes, listOf
+from smnp.synth.player import playNotes
+from smnp.type.model import Type
 
-def synth(args, env):
-    pass
 
-def pause(args, env):
-    pass
\ No newline at end of file
+def _synth1(env, vararg):
+    notes = [arg.value for arg in vararg]
+    bpm = env.findVariable('bpm')
+    playNotes(notes, bpm)
+
+
+_sign1 = varargSignature(ofTypes(Type.NOTE, Type.INTEGER))
+
+
+def _synth2(env, vararg):
+    for arg in vararg:
+        _synth1(env, arg.value)
+
+
+_sign2 = varargSignature(listOf(Type.NOTE, Type.INTEGER))
+
+
+synth = CombinedFunction(
+    'synth',
+    Function(_sign1, _synth1),
+    Function(_sign2, _synth2)
+)