How were China's ancient poems recorded and circulated?

In fact, in ancient times, poetry was rhythmic and more rhythmic. For example, the so-called Yuefu poetry in ancient times was originally a kind of music. Poetry is not only suitable for reading, but also has neat sentence patterns, harmonious rhythm, ups and downs, and can be composed and sung. I just don't know how the ancients sang in modern times. Many ancient poets and their masterpieces were sung to a great extent and were popular for a while. Scholars and poets are also very lucky. Their works are sung by famous prostitutes in brothels, and they promote each other. There are even writers who write lyrics for prostitutes, such as the famous Liu Yong. Therefore, this is a much-told story. There are also the famous "Song of Eternal Sorrow" and "Pipa Travel", both of which were extremely sensational music. Therefore, these songs also helped the spread and preservation of poetry to a certain extent.