The history of poetry and song during the time of Parthian rule is unrecorded. However, Sassanian culture cherished poetic art. The Arab conquest influenced the Persian vocabulary causing an even smoother poetic verse. Therefore, it was during ninth century when the new form of Persian poetry began which is found today. Persian language outstands among all Eastern languages in poetry.
Persian language is soft and expressive.
There are many options for Persian poets in use of words because there are many meanings to one word and many ways to express one's thought. That is why Persian poetry and language are rich in expression. Different forms and styles of Persian poetry developed throughout history. One of the early forms of poetry was qasida in royal courts. Qasida are poems of more than 100 couplets that do not rhyme.