feat: first? iteration of the piano tutorial (#240)

* feat: first? iteration of the piano tutorial

* fix: change emoji

* feat: docs - more live examples

Author: michalsek

packages/audiodocs/docs/fundamentals/lets-make-some-noise.mdx

@@ -108,3 +108,17 @@ import LetsMakeSomeNoiseSrc from '!!raw-loader!@site/src/examples/LetsMakeSomeNo
 In web environment you can use `decodeAudioDataSource` directly on the asset url, without the need to download it first.
 
 :::
+
+## Summary
+
+In this guide, we have learned how to create a simple audio player using `AudioContext` and `AudioBufferSourceNode` as well as how we can load audio data from a remote source. To sum up:
+
+- `AudioContext` is the main object that controls the audio graph.
+- `decodeAudioDataSource` method can be used to load audio data from a local audio source in form of `AudioBuffer`.
+- `AudioBufferSourceNode` can be used to any `AudioBuffer`.
+- In order to hear the sounds, we need to connect the source node to the destination node exposed by `AudioContext`.
+- We can control the playback of the sound using `start` and `stop` methods of the `AudioBufferSourceNode` (And other source nodes which we show later).
+
+## What's next?
+
+In [the next section](/fundamentals/making-a-piano-keyboard) we will learn more about how the audio graph works, what are audio params and how we can use them to create a simple piano keyboard.