I'm not sure if what I've been experiencing recently is synchronicity/deja-vu, but I'll note it nevertheless. It's been moments when reading or listening to music where something familiar has been evoked in me. It's tricky to describe clearly; the best way I can surmise it is a kind of reality-merging. I've had this sensation many times over the years and I always pay attention when it happens. It's like I'm experiencing something brand new, like a new album, and a part of me thinks "well, that's familiar to me". Really weird. The most recent time it's happened is this past week, when I purchased a box set of albums by the British blues guitar player Robin Trower. Until last month I'd not even heard of the guy, now I've got his first 10 albums. And I swear, a part of me responded to hearing this music for the first time with a nod of recognition and familiarity. Really odd. However it is possible that this music is merely reminiscent of other records in my collection, like Free/Bad Company and Hendrix, for example. So I bear that in mind too.
But it also happens when I'm reading online too. Certain articles evoke this same feeling of familiar recognition in parts of me. Maybe it's just pattern recognition being more prominent in my current habits, but I thought I'd mention it anyway because it's been happening quite a lot in the last few months in particular. It's probably nothing important, but is simply parts of my knowledge & being slotting into place properly. Nothing woo-woo, simply me discovering more about my interests and things I like; like I'm properly establishing who I am and what I enjoy, and what intrigues me.