The recordings do matter a lot and setup too. Most speakers CAN disappear, and do it much of the time.
Magneplanars disappear like 95% of the time except with hard-panned, L-R, jazz. They can be finicky, but even when they're not perfectly optimized they're nowhere to be found. Switching back, almost all box speakers have some box sound to them which makes them easier to"find".
Don't get me wrong, I love box speakers, the visceral aspects of boxes with traditional drivers keep me coming back. But Magnepans disappear with ease.