Not that La La Land can maintain that intense and upbeat narrative momentum.
Taken in that context, Chazelle’s La La Land shows that musicals, once as common as a Hollywood Western, do NOT have to be relics when they are as innovative, energetic and invigorating as this.
The beats of their journey will pay off, eventually, but the movie lingers a bit over moments you won’t realize are important until later.
It can’t, and the movie lulls as Mia and Sebastian maneuver common obstacles of the heart.