She counted 231 songs on her playlist. Each one carries a person, a place — and a reminder that we don’t become ourselves alone.

A woman lay down for a quick nap before a night out with her boyfriend and his friends. When she woke up, the house was empty. The group had left for karaoke, drinks, and dinner without her. No text.

But how will it fare long term among the other notable exclamation-point films in recent decades? We decided to find out by ...