This is definitely out of left field, but I’d like to ask about the state of popular music in two countries which had their national music scenes destroyed right about this time IOTL: Cambodia and Ethiopia.
I just saw a fascinating and kind of heart-breaking documentary,
Don’t Think I’ve Forgotten, about the history of Cambodian popular music. The essential gist of it is that in the 1950s through 70s Cambodia had a thriving popular music scene that blended traditional music and international genres such as Afro-Cuban music, rock and roll, and French popular music into a unique genre of Cambodian rock.
Then under the Khmer Rouge, most of the most famous musicians vanished, presumed dead, and the music scene disappeared completely. It took until the 1990s for what fragmentary recordings remained (the Khmer Rouge destroyed all of the records they could find) to be discovered on an international stage and prove to be surprisingly popular.
Ethiopia under the Derg had a very similar destruction of local popular music, although the cut off was less dramatic and the scene essentially survived.
So my point is, how will culture and arts develop in these two nations ITTL and possibly affect the wider world? I cannot remember the state of Ethiopian politics here, did the Derg still come to power? I do know that Cambodia has had a different outcome here with greater US support, and I could actually see some of the popular Cambodian popular music reaching the ears of American soldiers in the nation. What if Cambodian rock had an impact in America ITTL? Artists like Sinn Sisamouth and Ros Serey Sothea were and still are household names in Cambodia despite their deaths forty years ago. I could see them having significant success abroad ITTL, even above and beyond the effects of them surviving.
America has far less cultural contact with Ethiopia, of course, but that nation not falling to totalitarianism could help its artistic scene thrive and have a greater impact across East Africa.
Here’s Sinn Sisamouth, considered the father of Cambodian popular music, the “Cambodian Elvis”:
Ros Serey Sothea, the most famous woman singer, singing an agogo song:
Drakkar, a psychedelic and hard rock band:
As for Ethiopia, here’s Alemayehu Eshete, an Ethio-Jazz singer coincidentally called the “Ethiopian Elvis.” He’s still around, actually:
He plans on using his term in office to slash taxes and drive the GOP as far to the right as he can manage, though he is also hoping to wage a campaign to combat adult illiteracy. (Mecham seems to me, an endlessly complicated figure). His largest bases of support are his fellow Mormons and the remnants of the ultra-right wing John Birch Society, but he may try to paint himself as just a very conservative "mainstream" GOP man. 
