diff --git a/dynamic.py b/dynamic.py
new file mode 100644
index 0000000..abe0621
--- /dev/null
+++ b/dynamic.py
@@ -0,0 +1,43 @@
+#! /bin/python3
+
+import math
+import random
+import time
+
+from Library.tree import RGBXmasTree
+
+BRIGHTNESS_MULTIPLIER = 0.15
+
+class Animation:
+    def __init__(self):
+        self.animation_steps = 50
+        self.progress = [random.randint(0, self.animation_steps) for i in range(25)]
+        self.colours = [(random.random(), random.random(), random.random()) for i in range(25)]
+        self.pixels = [(0, 0, 0) for i in range(25)]
+
+    def next(self):
+        for i in range(len(self.progress)):
+            self.progress[i] = (self.progress[i] + 1) % self.animation_steps
+            if self.progress[i] == 0:
+                self.colours[i] = (random.random(), random.random(), random.random())
+
+            magnitude = math.sin(math.pi * (self.progress[i] / self.animation_steps))
+            magnitude *= BRIGHTNESS_MULTIPLIER
+            colour = self.colours[i]
+            self.pixels[i] = (colour[0] * magnitude, colour[1] * magnitude, colour[2] * magnitude)
+
+    def set_colours(self, tree: RGBXmasTree):
+        for i in range(25):
+            tree[i].color = self.pixels[i]
+
+if __name__ == "__main__":
+    tree = RGBXmasTree()
+    animation = Animation()
+
+    try:
+        while True:
+            animation.next()
+            animation.set_colours(tree)
+            time.sleep(0.5)
+    finally:
+        tree.off()