Ask HN: Idea of building music player depends on your mood

I thought of doing an side project, which does this. Based on what I'm currently doing in my PC, the app will play a music.

To get started I thought of doing this: Build an chrome extension, which does analyse the web page your currently in, find the mood of it, and play the corresponding songs from your local system.

The idea looks good to me, but I wonder, whether this can be really achievable.

I really need your thoughts and inputs regarding this.