There are many categories of music that I like, but am only glancingly acquainted with: black metal, Nuggets -style psych, krautrock, truck-driving country, etc. One of those genres is Canadian indie pop from the oughts. There is this whole scene — a “broken” “social” scene, I guess — that I find pretty good but don’t know that much about. It has never been my focus, and I have never really listened to Stars and wouldn’t have thought of going to see Amy Millan except that a friend strongly recom…