Sure, I'll post some links later. The BIG push at AES a few weeks ago was the labels pivot to immersive audio with Dolby Atmos and Sony 360 leading the charge. If you could partner woth either of them using THEIR content it would be intersting. You would likely have their help in promoting your demo which wouldn't hurt. Maybe an e-mail blast, a mention in their newsletter or SM pages. Sony is launching late fall and partnering with Tidal, Deezer and Nugs.net. They are making a BIG push and would likely be happy to co-promote with you at the show. If you like public speaking maybe even host a roundtable with you, Sony/Dolby, and one of their streaming service partners:https://www.sony.com/electronics/360-reality-audio
As for Dolby they have music content on blueray available now. If you were doing a demo of one movie clip try Alita:"There are several key moments that are worthy of mention, the alleyway battle, the barroom brawl which segues into the underground battle with Grewishka and the final Motorball arena sequence. Each contain a host of swirling effects, nearfield pans, and ambience that comes together in a resplendent blend of room traversing sound that shows what this format is capable of. I consider this Dolby Atmos mix to be involving, entertaining, and among the best that I have heard." Mark Henninger
For music I would go with a cut from the Abbey Road atmos mix
"The Atmos (on Abbey Road) is just the icing on the cake, for anyone with an Atmos set up this is an absolute must have set.
Atmos just allows the music to breathe, and without doubt you hear things that you have never heard before, Incredible.Giles has done a great job with the Atmos he hasn't just put sounds anywhere just because he can.
" HD Movie Source
As for Sony 360 tracks I think you will have to wait until they drop them which could be anytime.
I would also recommend one demo using the upmixer emphasizing thie will work with music mixed in stereo too and that you don't need to replace music you already own. Maybe a cut you typically hear at an audio show that people are familiar with on a regular CD, start it in 2 channel and then one button on the remote and transition to immersive.
It will be intersting if you can get Dolby or Sony on board too. Keep us posted.