An expressive mid-20th century French School oil painting on canvas depicting a festive nocturnal scene at Place du Tertre in Montmartre, Paris. Executed in a naive post-impressionist style, the composition captures figures dancing in the square lit by string lights, an accordionist playing, and the illuminated domes of Sacré-Cœur and Hôtel du Tertre rising beneath a crescent moon. Lower right signature reads "Simone Lortet". Housed in its original carved and gilded vintage frame. Simone Lortet was a mid-20th-century French figurative painter associated with the mid-century School of Paris (École de Paris). Working primarily in oils during the post-WWII era, Lortet specialised in expressive, atmospheric depictions of iconic Parisian landmarks, street life, and nocturnal bohemian gatherings, particularly centered around the historic Montmartre district. Her painting style merges elements of naive art and post-impressionism, characterized by bold contouring, rich impasto, vivid color palettes, and a nostalgic narrative quality that captured the vibrant nightlife, street musicians, and romantic charm of mid-century Paris. The painting is in good vintage condition, exhibiting minor surface dirt consistent with age. Canvas tension remains firm. The heavy carved gilded frame displays light edge wear and localized cracking to the gesso finish at the inner frame joints. Dimensions: 96cm x 81.5cm (framed)