'It's huge what we've done', says Jean-Luc Melenchon, referring to the New Popular Ecological and Social Union (Nupes) coalition sealed in May, at the "Fete de l'Humanite" music festival near Paris. The leader of the leftist La France Insoumise (LFI) party is making his return at this festival after several years of absence, particularly because of strained relations with the Communist Party. SOUNDBITE