The Overture
โหมโรง (original)
Starring Anuchit Sapanpong, Adul Dulyarat, Pongpat Wachirabunjong, Narongrit Tosa-nga, Phoovarit Phumpuang, Sompob Benjathikul, Kiat Punpiputt, Arratee Tanmahapran, Sumet Ong-ard, Somlek Sakdikul
It's a drama and musical movie, and has a rating of 7.9 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Italy.