Interesting new start to Doctor Who's new season. I think that, between the two episodes, 'The Devil's Chord' is the one that stood out for me.

Intriguing premise, highlighting the cultural and historical impact of music in general, beyond the focus on the Beatles, and how ingrained it is in human history. The significance of the arts and pop culture and their political and societal influence is something that is sometimes overlooked, or even dismissed. And having always been interested in the subject, enough to have also researched it quite a bit on an academic level, it's always great seeing it explored in some way.