The Wide Parisian World of Free Music - Frugal Traveler Blog - NYTimes.com:
"It was a faulty assumption. While you’ll pay to see the bigger acts in Paris, so many of the smaller (and cooler) venues are free that I never paid a single cover charge. Nor was finding a show difficult. A pamphlet-size weekly magazine called LYLO (Les Yeux Les Oreilles, or The Eyes The Ears, distributed at clubs and record stores) listed nearly every venue and performance in Paris, broken down by genre and neighborhood."