Hi Hooktheory team,
first of all, congrats on the website and your efforts to help people understand and hear music and chord progressions better.
In chord crush, I often hear a progression I really like, or a progression I struggle to recognise. It would be nice to have a feature to store your own library of chord progressions with a direct link to the YouTube (same as the game, but where I can choose and I see the list). Like this I could always go back and hear it again, or remember to use it in my own music.
I think it shouldn’t be difficult to implement and could be quite useful.