Interesting Music Phenomenon

Okay, so for those who may know me, you should be aware that I am interested in the musical genre known as ska. You may also be aware that I have many t-shirts that feature ska bands or concerts that I have attended. So, I've warn these shirts in many times everywhere I've lived, and no one as really ever said anything.
So, we were out in Greenlake, a neighborhood in Seattle, shopping for antique furniture. Yes, I know, antiquing. Apparently it's something you do with your wife when you want furniture, but this post is not about that. So, in Greenlake, we ended up at this chocolate shop where we got milk to drink, and the barista girl made a comment about my shirt. I happened to be wearing my Ska is Dead tour shirt from 2005 that day, that features zombies. Very hip indeed.
Later that day, we went to Urban Outfitters in the University District to buy ourselves a coat rack for our new apartment. A girl who worked there was helping us, and she made a comment about my shirt too. She went into some story about how she helped with the tour, and knew a guy in The Toasters. I thought it was a funny coincidence, and that it had something to do with being in the college part of town. I didn't think much of it after that. Honestly,I thought the girl may have been flirting with me, but I was with Rebecca. And that was the end of that.
Until today, when we were out in West Seattle at the West Seattle Bowl for an event with Rebecca's coworkers. When we were getting ready to leave, a gentleman came up to me and ask if I was from Michigan. I happened to be wearing my Mustard Plug t-shirt, so this question wasn't completely out of the ordinary for me. He asked if they were still around, and made some small talk. He also made a comment or two about how he saw them in really small clubs back in Michigan.
Now, people commenting about t-shirts I wear really isn't that weird, I do tend to wear crazy t-shirts often. The fact that three people in Seattle have made comments about ska band t-shirts I've worn is odd. Considering how popular ska is what makes the situation odd. And this happens in the town that has a Science Fiction Hall of Fame and a Laser Dome for the Laser Rock Shows.
I'm beginning to think this is the town for me.