This is an interesting article I guess, but at the same time it just talks about something we all pretty much already knew..
Why Teenage Songs Define Us: The Science of Musical Memory https://neurosciencenews.com/music-memory-neurodevelopment-29830/
Summary: A global study reveals that our most emotionally resonant music tends to come from our teenage years—typically peaking around age 17. This “reminiscence bump” marks the period when our developing brains most strongly imprint musical memories that help form identity...
Yes we already knew that. Your era musically is usually from the time you are 10 to your mid twenties.
Me a bit earlier. So with me it's from 1956 to the mid seventies. With my teenage years being the Decade of the 60s. But musically the first part of the 60s was still the same as the late 50s. Those were the "good old days" and it also shapes your thinking somewhat also. It's not just music.
So when I talk about what music you hear now in mainstream mainly and what commercial radio plays on FM stations and my opinions of it being all machine generated and being the death of music and not real you can try to understand when I grew up and why I think this, and how it sounds to me. When your "era" gets to be in the past that's as far as you go. As soon as you get past your mid 20s you, general term, start to get left behind. But I like my parents era of swing and big band also. And of course the OTR shows.
You can know just from what music someone listens to when they listen to their choice of music when their teenage years were.
Of course there are exceptions. It's not a hard and fast rule.