The Bengali language boasts a rich literary heritage it shares with neighbouring Bangladesh. West Bengal has a long tradition of folk literature, evidenced by the Charyapada, a collection of Buddhist mystic songs dating back to the 10th and 11th centuries; Mangalkavya, a collection of Hindu narrative poetry composed around the 13th century; Shreekrishna Kirtana, a pastoral Vaishnava drama in verse composed by Boru Chandidas; Thakurmar Jhuli, a collection of Bengali folk and fairy tales compiled by Dakshinaranjan Mitra Majumder; and stories of Gopal Bhar, a court jester in medieval Bengal. In the 19th and 20th centuries, Bengali literature was modernised in the works of authors such as Bankim Chandra Chattopadhyay, whose works marked a departure from the traditional verse-oriented writings prevalent in that period;[168] Michael Madhusudan Dutt, a pioneer in Bengali drama who introduced the use of blank verse;[169] and Rabindranath Tagore, who reshaped Bengali literature and music. Indian art saw the introduction of Contextual Modernism in the late 19th and early 20th centuries.[170] Other notable figures include Kazi Nazrul Islam, whose compositions form the avant-garde genre of Nazrul Sangeet,[171] Sarat Chandra Chattopadhyay, whose works on contemporary social practices in Bengal are widely acclaimed,[172] and Manik Bandyopadhyay, who is considered one of the leading lights of modern Bengali fiction.[173] In modern times, Jibanananda Das has been acknowledged as "the premier poet of the post-Tagore era in India".[174] Other writers include: Bibhutibhushan Bandopadhyay, best known for his work Pather Panchali; Tarashankar Bandopadhyay, well known for his portrayal of the lower strata of society;[175] Manik Bandopadhyay, a pioneering novelist; and Ashapurna Devi, Shirshendu Mukhopadhyay, Saradindu Bandopadhyay, Buddhadeb Guha, Mahashweta Devi, Samaresh Majumdar, Sanjeev Chattopadhyay, Shakti Chattopadhyay, Buddhadeb Basu,[176] Joy Goswami and Sunil Gangopadhyay.[177][178]