𝕴've been blogging a lot this summer about Arcade Fire's lead single from Everything Now. It's an instantly-catchy, room-grabbing hit. (Or it would have been, if radio had picked it up - I still think it'll be an indie party classic for years). But it was a strong lead single, something which seems to be a rarity, or a fluke for albums over the years. Why do artists/record labels have such a hard time picking a lead single?