From the very first scene, La La Land captures your interest in a vice and never lets go. It was so magical, visually stunning, and the songs will stay with you long after you leave the theatre. And, despite La La Land being a musical, when people weren't singing and dancing it still had the feeling of a regular movie, which made the story itself captivating.
I don't think Emma Stone has ever given a better performance than this. She was good in Birdman, sure, but she soared in La La Land. One scene in particular that sticks out to me is "The Audition", during which she was able to sing a beautiful solo while the camera circled around her; all in one take. On the contrary, my only criticism is that Ryan Gosling wasn't doing much acting while he was singing and dancing. He is a very gifted singer, and a lovely dancer, but his face remained a little deadpan during musical numbers.
But the whole movie is damn near perfect. It was interesting story-wise, the music was fantastic, it made me happy, sad, and made me dance in my seat.
But what really makes this movie, to me, is the ending sequence. That was what made La La Land "perfect". It tied everything together so beautifully, but also left some room for the viewer to do their own thinking, and it even made me, who has cried during only one other movie ever, shed a tear.
La La Land is surely going to make cinematic history. It's new and exciting, and it's an experience you surely won't want to miss it.