During the 18th century Rattanakosin period, which still fought with the Burmese, many of the early Rattanakosin works deal with war and military strategy. Some examples are ''Nirat Rop Phama Thi Tha Din Daeng'', ''Phleng Yao Rop Phama Thi Nakhon Si Thammarat''. In the performing arts, perhaps the most important dramatic achievement is the complete work of ''Ramakian'' by King Rama I. In addition, There were also verse recitals with musical accompaniment, such as Mahori telling the story of ''Kaki'', Sepha relating the story of ''Khun Chang Khun Phaen''. Other recitals include Sri Thanonchai. The most important Thai poet in this period was Sunthorn Phu (สุนทรภู่) (1786–1855), widely known as "the bard of Rattanakosin" (). Sunthorn Phu is best known for his epic poem ''Phra Aphai Mani'' (), written during 1822 and 1844. ''Phra Aphai Mani'' is a versified fantasy-adventure novel, a genre of Siamese literature known as  ().