It dosn't sound like sta sera it sounds like statzito, which means shut up. I speak Florentine, which is what is recognized as "Italian" It is what is spoken in courts, written in newspapers and tought in schools. This song is in a rough neopolitan dialect, which is almost a separate language itself. When I listen to this song, I can pick up several lines. Here it is, you'll get the idea. hope this helps:

Cesta no surecillo a basoccella dinda mur
Ogna sere quella esce quanda casa scura
Endo dindo la cucina balla sulasu
A parrano malandrino pura un gabo sapaur

There is a rat in the walls
He comes out every night when the house is dark
He dances back and forth in the kitchen
He dances?(ballano) like a street wanderer(malandrino), even the cat(gatto) is afraid(ha paura)

Pepino suracill ana parta scubari,
Managa suracill a casa ma dai,
A quando si briaggo a Pepino giong apa

???
Pepino you damn rat, leave my house
shut up in the kitchen(statzita in la cucina)
???
when he gets drunk I'll grab him

the bagnarole is the bath tub

Quella no piace forgia American,
Quella va trova no poca Parmesan,
La fatto ghiata ghiat gusto ena cor
Quando cella camina para probino caladur.

He doesn't like american cheese
he never finds the parmesan