The thing about “Losing My Edge” is that it only started as a joke. The song to anyone who heard it within two or so years of its release — basically any point before the first LCD Soundsystem album came out, by which time the project was already a known name in certain circles — would’ve come across as a very obvious prod at contemporary hipster culture by a guy who was 32 and just about to hit that age when you actually do give up on new music. But a funny accident happened once James Murphy broke containment: People unfamiliar with those underside-of-the-iceberg depths of indie music culture used it as an abacus, an education. It went from a joke to something serious.