The shop was playing something I did not know. I asked the person behind the counter about the drummer, and they pulled two other records from a shelf.
We listened to a few minutes of each. The conversation wandered from a particular cymbal sound to a venue that had closed, then to the first concert either of us had attended alone.
I bought one of the records and wrote the others down. A good recommendation gives you somewhere to begin. A good conversation makes you curious about how someone else hears.