“It is called a listening party. It is a loosely directed but passionately devised gathering held purely for the love and discovery of music. New music. Old music. Loud music. Music played at volumes you can’t even enjoy in your car without blowing out the sunroof and messing up your hair and drowning out all the urban sirens. But it is not solely about volume. It is about quality. It is about range. It is, perhaps more than anything else, about surprise.”