diff --git a/src/app.py b/src/app.py
index 91501d1..9bd8fd3 100644
--- a/src/app.py
+++ b/src/app.py
@@ -2,7 +2,7 @@
 import logging
 import sentry_sdk
 from sentry_sdk.integrations.logging import LoggingIntegration
-import config
+from utils import config
 
 """
 Main Entrypoint
diff --git a/src/preprocessor/__init__.py b/src/preprocessor/__init__.py
index e69de29..b40b2c2 100644
--- a/src/preprocessor/__init__.py
+++ b/src/preprocessor/__init__.py
@@ -0,0 +1,2 @@
+#!/usr/bin/env python3
+from .soundpreprocessor import SoundPreProcessor
diff --git a/src/preprocessor/soundpreprocessor.py b/src/preprocessor/soundpreprocessor.py
new file mode 100644
index 0000000..b86b9aa
--- /dev/null
+++ b/src/preprocessor/soundpreprocessor.py
@@ -0,0 +1,23 @@
+#!/usr/bin/env python3
+from .abcpreprocessor import AbcPreProcessor
+
+"""
+Abstract base class for Sender
+"""
+
+__author__ = "@tormakris"
+__copyright__ = "Copyright 2020, Birbnetes Team"
+__module_name__ = "soundpreprocessor"
+__version__text__ = "1"
+
+
+class SoundPreProcessor(AbcPreProcessor):
+    """
+    SoundPreProcessor class, responsible for detecting birb chirps in sound sample.
+    """
+    def preprocesssignal(self, signal):
+        """
+        Classify a sound sample.
+        :return:
+        """
+        pass
diff --git a/src/sender/__init__.py b/src/sender/__init__.py
index e69de29..ce90cee 100644
--- a/src/sender/__init__.py
+++ b/src/sender/__init__.py
@@ -0,0 +1,2 @@
+#!/usr/bin/env python3
+from .soundsender import SoundSender
diff --git a/src/sender/soundsender.py b/src/sender/soundsender.py
new file mode 100644
index 0000000..b627372
--- /dev/null
+++ b/src/sender/soundsender.py
@@ -0,0 +1,23 @@
+#!/usr/bin/env python3
+from .abcsender import AbcSender
+
+"""
+Send a sound sample
+"""
+
+__author__ = "@tormakris"
+__copyright__ = "Copyright 2020, Birbnetes Team"
+__module_name__ = "soundsender"
+__version__text__ = "1"
+
+
+class SoundSender(AbcSender):
+    """
+    SoundSender class, responsible for sending sound samples to the cloud.
+    """
+    def sendvalue(self, value, decision):
+        """
+        Send a sound sample to the cloud.
+        :return:
+        """
+        pass
diff --git a/src/sensor/__init__.py b/src/sensor/__init__.py
index e69de29..3b0492f 100644
--- a/src/sensor/__init__.py
+++ b/src/sensor/__init__.py
@@ -0,0 +1,2 @@
+#!/usr/bin/env python3
+from .soundsensor import SoundSensor
diff --git a/src/sensor/soundsensor.py b/src/sensor/soundsensor.py
new file mode 100644
index 0000000..3765b21
--- /dev/null
+++ b/src/sensor/soundsensor.py
@@ -0,0 +1,23 @@
+#!/usr/bin/env python3
+from .abcsensor import AbcSensor
+
+"""
+Sound sensor high level API
+"""
+
+__author__ = "@tormakris"
+__copyright__ = "Copyright 2020, Birbnetes Team"
+__module_name__ = "soundsensor"
+__version__text__ = "1"
+
+
+class SoundSensor(AbcSensor):
+    """
+    SoundSensor class. Responsible for sound retrieval from any microphones present.
+    """
+    def getvalue(self):
+        """
+        Retrieve a 5 second sound clip from a microphone.
+        :return:
+        """
+        pass
diff --git a/src/signal_processor/__init__.py b/src/signal_processor/__init__.py
index e69de29..519b014 100644
--- a/src/signal_processor/__init__.py
+++ b/src/signal_processor/__init__.py
@@ -0,0 +1,2 @@
+#!/usr/bin/env python3
+from .soundsignalprocessor import SoundSignalProcessor
diff --git a/src/signal_processor/soundsignalprocessor.py b/src/signal_processor/soundsignalprocessor.py
new file mode 100644
index 0000000..4f18a2a
--- /dev/null
+++ b/src/signal_processor/soundsignalprocessor.py
@@ -0,0 +1,23 @@
+#!/usr/bin/env python3
+from .abcsignalprocessor import AbcSignalProcessor
+
+"""
+Abstract base class for signalprocessor
+"""
+
+__author__ = "@tormakris"
+__copyright__ = "Copyright 2020, Birbnetes Team"
+__module_name__ = "soundsignalprocessor"
+__version__text__ = "1"
+
+
+class SoundSignalProcessor(AbcSignalProcessor):
+    """
+    SoundSignalProcessor class, responsible for handling the sound signal processor pipeline.
+    """
+    def processcurrentsignal(self):
+        """
+        Process a sound sample.
+        :return:
+        """
+        pass
diff --git a/src/utils/__init__.py b/src/utils/__init__.py
new file mode 100644
index 0000000..9d7d137
--- /dev/null
+++ b/src/utils/__init__.py
@@ -0,0 +1,2 @@
+#!/usr/bin/env python3
+from .config import SENTRY_DSN, RELEASE_ID, RELEASEMODE
diff --git a/src/config.py b/src/utils/config.py
similarity index 100%
rename from src/config.py
rename to src/utils/config.py