This is the 11719th most frequent Portuguese word.
poesia
"Poetry; artistic expression in written or spoken verse."
Here, 'poesia' is used as an uncountable noun referring to the literary genre of poetry.
Gosto de ler poesia toda noite.
I like reading poetry every night.
In this example, 'poesia' metaphorically represents the lyrical and artistic quality present in the song's lyrics.
Essa música tem uma poesia encantadora.
This song has enchanting poetry.
In this context, 'poesia' refers to a concrete singular work of the literary genre, that is, a poem.