This is an ongoing series. Upcoming sessions include conversations with mixing engineer Dave Way (he did Macy Gray's The Trouble With Being Myself in 5.1; not sure what he's mixed so far in Atmos, but he's all-in [that's a great video, by the way]), mixing/mastering engineer Michael Romanowski (Atmos mix for Fantastic Negrito's Have You Lost Your Mind Yet?), and mastering legend Emily Lazar.
https://professional.dolby.com/events/dolby-atmos-music-creation-series/
https://professional.dolby.com/events/dolby-atmos-music-creation-series/