In the 16–17th centuries the art of mugham was passing through the development process as a folklore professional music of the palace conditions. In this period a dastgah form starts to develop in the structure and forms of mugham. New colors and shades as well as tasnifs developed in mugham performance. The masters of mugham of Azerbaijan sang gazals written in aruz genre by Fizuli, Habibi and Khatai. The music events were held in most regions of today's Azerbaijan in the 19th century and mugham was performed at these events. In the 19th century famous French writer Alexandre Dumas who attended the ceremony in Shamakhy, wrote in his works about his trip saying he was greatly impressed by mugham that sounded there. Such events held in Azerbaijan were attended by khanendes from Karabakh, Baku and Tabriz which in turn caused the blending of singing traditions of different regions.