For me it was accordions. I used to be obsessed with a picture of an accordion in a book when I was a child. That obsession didn't stay for too long because I eventually got bored of that picture and I couldn't find any more accordion-related stuff to look at. It resurfaced a little bit when my dad started to listen to traditional Serbian music. It turned into a full special interest when I started to listen to traditional Finnish music on my own at the age of fourteen.
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Your neurodiverse (Aspie) score: 82 of 200
Your neurotypical (non-autistic) score: 124 of 200
You are very likely neurotypical