I'm not exactly sure how to phrase this one...
I'm thinking, if TV &/or radio was invented a lot sooner (1901? 1880, even?), what would that do to pop culture? What sort of shows would be on in the 1910s-30s? Who might be famous TTL, who wasn't OTL? Would vaudeville still be the source of early radio/TV performers & routines? (It seems likely. I'm thinking, frex, John Wayne might be a major radio/TV star.)
Would pop music be affected? It would seem to make big-selling records easier. It would seem to mean the popularity of, frex, rag would be greater; does that butterfly away jazz or blues? Swing?
If there's "electrical" tech decades earlier, does that mean big bands disappear sooner? Does it mean honky tonk, as a musical style, happens sooner?
Does this increase the popularity of any sport(s)? OTL, baseball gained a lot of popularity after going on radio; can this happen sooner? Enough for, frex, the PCL to survive, because it allows games on radio & MBL doesn't (as OTL)? Or NFL? ("Hockey Night in Canada" in 1902?

) Or maybe the Daytona 500 or Indy 500 on TV in 1920?
I'm also thinking, how far back is it practical to move the POD. People like Hertz were capable of inventing the triode that makes voice radioi possible decades before it was actually done....