I saw this really cool video in which this man has turned his apartment into RGB lighted one. All lights react to sound together when needed, can be controlled through android app and Google Home too. It's so good, but there are no perfect tutorials.

So, if Electronoobs, you can make your own house into the RGB one, with similar features, with step by step details, it would be awesome!

https://www.youtube.com/watch?v=ycgC2Mf0jxs (Video Link)
https://www.youtube.com/watch?v=aWmutgb22a0 (Video Explanation Link)

Update  - for the sound reactive part, today I successfully managed to get real-time sound levels from my phone's mic through MIT App Inventor, so we can send that data to Arduino through Bluetooth client.

I've also made a sensitivity slider because sometimes the audio source might be too far away so we can increase sensitivity from the app.

If needed, I can drop the apk and aia files here.

UPDATE 2 - I automatically made this myself. Thanks.