That could easily be extended to other interest areas;

The average person may exclusively eat local, contemporary foods (ie whatever everyone else in their community eats), while "foodies" go out of their way to find new and interesting flavors.

For many people, fashion is, "whatever looks kinda like what everyone else is wearing." For "fashionistas", there's a whole language around clothing choices.

But it's better to share some actual joyful experiences.

I recently started listening to "Angine de Poitrine". They're a modern band that just released a new album and still plays live concerts. According to the OP chart, they're 15 years too new for me.

For some old stuff, check out Hillery Hahn. I keep going back to her Bach sonatas and he lived in the 15th and 16th centuries.

Then there are crazy fusion versions. I recently found Ben Comeau's gem "Donald Trump is a Wanker". He took the bassline of "Seven Nation Army", gave it a choral voice, and transcribed it to a fugue format. To paraphrase an other contemporary artist; that shit is bananas.

What are your current favorites from the old and new categories?