Here is what I am seeing. We are almost approaching 2018 (the time of my response) and I have not heard a really good Dolby Atmos demnonstration anywhere. Virtually nothing related to surround sound has made it into the music end of things. I am not aware of any theaters in my area that have Atmos (or maybe its DTS counterpart). I am starting to wonder, is Dolby Atmos and DTS:X about to suffer the same “fatal death” that 3D video suffered? Maybe I missed something along the way, but I do not see much interest in Dolby Atmos.
The first native studio Atmos re-mixes have been released, but most don't know about them yet. One is excellent IMO and makes me very excited at the possibilities of some of my favorite albums being remixed in Atmos. Of course, as with any format, the quality of the Atmos mixes will be variable. But when done right it has the potential to be a revolutionary step forward in studio mixes.
The disc that is excellent is R.E.M. - Automatic for the People. I was never a big R.E.M. fan, but the Atmos mix elevates the music compared to the stereo mix. It is literally the finest overall music experience I personally have in my collection, stereo or multichannel.
The INXS - Kick 30 mix is not at the same level as the R.E.M. disc, but it does have a couple of tracks that are awesome in Atmos. Many of the stereo mixes are better on this disc than the Atmos mixes IMO.
Neither of these bands are bands I would list as the music I listen to, so take what I say with that in mind. But the R.E.M. disc elevated the music enough for me to change my mind on that album, and the INXS disc didn't.
Matching speaker choices and calibration will impact Atmos music more than movies, so I'm a little concerned that their could be a wide variation in impressions of studio Atmos music mixes, and that could impact it's adoption. The early music Atmos mixes have been largely crowd noise and atmospherics in the height channels, and that can have all manner of SQ differences between systems and still sound great. But when mixing vocals into the ceiling speakers, timbre matching and calibration levels can have a big impact on the experience.