As I think I showed upthread, "native" northern Italian dances are very, very, different from tarantellas and pizzicas and the Neapolitan tamurriata, and even the tarantella of one district might be different from that of another. Some Tuscan dances are like the Austrian Landler, while a lot of other dances are just hold overs from Medieval dances, which is why to American and British Isles people, they look like "Irish" "jigs" or "country dances". It's just that they also held on to while also subtly varying those Medieval dances.
Tamurriata:
Northeastern Italy's Furlana:
https://www.youtube.com/watch?v=g61PCYYCWy4
Unfortunately, while Southern Italians have held on to these ancient dances, we haven't, or, at least, they haven't in my areas of Liguria and Toscana or even La Spezia. In my father's isolated area in the Northern Apennines they do still occasionally dance them.
It's different with the singing. Northern Italy has held on better to its ancient singing traditions, like the Ligurian trallalero. Another big distinction is that northern Italy is very, very, into choral singing, often men's choirs, but sometimes also women or mixed choirs. Think of something like Welsh men's choirs. So far as I know, that peters out somewhere south of Toscana, and the lone male or female ballad takes over.
I don't know if a tradition of choral, polyphonic, unaccompanied music exists in Greece, but I've heard it exists in Caucasus countries. Of course it exists in Corsica and Sardinia as well as Liguria and up into the Northern Apennines and the territoria delle quattro province and my father's area. Male or mixed choirs are extremely popular in northern Europe, in places like, as I said, Wales, and Switzerland, Austria, Germany. I'm extremely fond of the the Welsh male choirs.
Trallalero :
https://www.youtube.com/watch?v=eHYbkHl0nD8&t=67s
Men's choir from northern Italy:
https://www.youtube.com/watch?v=VDWG1G-I_Yg
One of my favorites: La Montanara
https://www.youtube.com/watch?v=xQZyZggh3SQ
Italian ballad-the Neapolitan ballads are the finest in the world in my opinion, even suitable to operatic voices.
https://www.youtube.com/watch?v=kzMEv2ht2b0
Jonas Kaufman live: Core 'ngrato or Ungrateful heart. He deserved every one of those Bravos!
https://www.youtube.com/watch?v=yUoIeSsCG6I