Ok, since folks are asking (@kattiidenberg @andresmh), I'll tell you how it went down.

I was AFK for the day, driving my parents to the house they're about to move into, so I could help with logistics.

Vulnerability 1: I was distracted with emotionally heavy stuff.

Vulnerability 2: I was on my phone, not my laptop.

At a gas stop, I checked my phone and saw an email from an address at my home institution saying that an alumna was giving away a piano & we should reach out to her if interested

@aramsinn @The_Tim

what seems a bit worrying is whoever did it clearly knew you were both a musician (OK its on your website and Uni records) but also that you might have enough spare space to keep a grand piano (I've got relatives who are musical and have quite a large house but even so can only fit in an upright)