Terrible acting, screenplay and direction.

A lot of fun.

The thing I enjoyed most about the film is the fact that it doesn't shy away from being a super-sized-cliche;

There are moments that feel comical, some horrific, and some downright inspiring but the tonal shifts hardly matter as the end results come to a film that's perfect for this time.

"Musicarello" was a kind of light entertainment Italian movie quite popular in the 60's, that used thin plot as a pretext to let the actors burst into popular songs, and the actors were more than often singers... "Jolly blu" seems like a revival of that kind of movies, telling us the story of Max Pezzali, leader of juvenile Italian pop band "883"...Far from being a masterpiece, and accompanied by some very cheesy acting (particularly courtesy of Italian TV starlet Alessia Merz), the movie nevertheless is quite likable to watch, and provides the best performance to date (although it is more or less a cameo) for Italian actress-singer-showgirl Sabrina Salerno.

the movie is not just a musical, but is a really "karaoke" type. People watching it are involved in singing the songs, kept together through a valid line story. It is interesting, because it talks about some pieces of the real life of the main character, Max Pezzali.