Chi è Marco Mengoni, il vincitore di Sanremo 2023

Pronome relativo CHE
Relative pronoun CHE

“…la canzone “L’essenziale”, che è diventata un grande successo”
(…the song “L’essenziale”, which became a huge success)

In the sentence above, “che” is a relative pronoun that connects the noun “la canzone” with the clause “è diventato un grande successo.”
It functions as the subject of the clause and refers to the antecedent “la canzone.” The clause provides additional information about the song and explains that it became a great success.

Relative pronouns like “che” are commonly used in Italian to introduce subordinate clauses that modify a noun or pronoun. They help to avoid repeating the noun or pronoun and make the sentence more concise.