@sarasc, thanks so much for the reply! I wouldn't really call adding the GX BG music an important feature, just a little nitpicky thing, so I can't hold you to account. But thanks for letting me know I can enable the sidebar with more features and taking feedback into consideration. This is why Opera holds a special place in me.

Congratulations on this new UI. I know that this is still in development but come on.... please be innovative and take the dynamic background music from Opera GX to Opera One, let me be able to do split-screen multitasking and add my own websites into the sidebar, and please, for the good of all things, let me be able to use my websites as web apps. It's not hard to add these features, Opera.