Great piece in The Guardian on the best clubs and bars in Paris to hear live Gypsy Jazz--or Jazz Manouche in French--as played and popularised by the legendary Django Rhinehardt. The nice thing about the article recommendations is that you'll get to see parts of Paris well off the beaten tourist track e.g. La Chope des Puces in Saint-Ouen, a bar close to where Django Rhinehardt lived when he first moved to Paris.