diff --git a/smnp/environment/factory.py b/smnp/environment/factory.py
index 8a08e96..ede8e66 100644
--- a/smnp/environment/factory.py
+++ b/smnp/environment/factory.py
@@ -1,12 +1,7 @@
 from smnp.environment.environment import Environment
 from smnp.module import functions, methods
-from smnp.type.model import Type
 
 
 def createEnvironment():
-    variables = {
-        "bpm": Type.integer(120)
-    }
-
-    return Environment([ variables ], functions, methods)
+    return Environment([{}], functions, methods)
  
diff --git a/smnp/library/__init__.py b/smnp/library/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/smnp/library/code/__init__.py b/smnp/library/code/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/smnp/library/loader.py b/smnp/library/loader.py
new file mode 100644
index 0000000..37eac21
--- /dev/null
+++ b/smnp/library/loader.py
@@ -0,0 +1,9 @@
+from pkg_resources import resource_string
+
+from smnp.program.interpreter import Interpreter
+
+
+def loadStandardLibrary():
+    source = resource_string('smnp.library.code', 'main.mus').decode("utf-8")
+    return Interpreter.interpretString(source)
+
diff --git a/smnp/main.py b/smnp/main.py
index 733f73c..71cb648 100644
--- a/smnp/main.py
+++ b/smnp/main.py
@@ -1,13 +1,14 @@
 import sys
 
 from smnp.error.base import SmnpException
+from smnp.library.loader import loadStandardLibrary
 from smnp.program.interpreter import Interpreter
 
 
 def main():
     try:
-        
-        Interpreter.interpretFile(sys.argv[1], printAst=True)
+        stdLibraryEnv = loadStandardLibrary()
+        Interpreter.interpretFile(sys.argv[1], printAst=True, baseEnvironment=stdLibraryEnv)
 
     except SmnpException as e:
         print(e.message())
diff --git a/smnp/program/interpreter.py b/smnp/program/interpreter.py
index 58f106b..fdd33e0 100644
--- a/smnp/program/interpreter.py
+++ b/smnp/program/interpreter.py
@@ -9,12 +9,20 @@ from smnp.token.tokenizer import tokenize
 class Interpreter:
 
     @staticmethod
-    def interpretFile(file, printTokens=False, printAst=False):
+    def interpretString(string, printTokens=False, printAst=False, baseEnvironment=None):
+        return Interpreter._interpret(string.splitlines(), printTokens, printAst, baseEnvironment)
+
+    @staticmethod
+    def interpretFile(file, printTokens=False, printAst=False, baseEnvironment=None):
+        return Interpreter._interpret(readLines(file), printTokens, printAst, baseEnvironment)
+
+    @staticmethod
+    def _interpret(lines, printTokens=False, printAst=False, baseEnvironment=None):
         environment = createEnvironment()
+        if baseEnvironment is not None:
+            environment.extend(baseEnvironment)
 
         try:
-            lines = readLines(file)
-
             tokens = tokenize(lines)
             if printTokens:
                 print(tokens)