外太空的莫扎特

黄渤

Dawang

Rong Zishan

Xiaotian

陈思诚

Mozart (voice)

黄杨钿甜

Ding Jieling

姚晨

Niu Yuxia

范偉

Grandpa Xiaotian

贾冰

Teacher Deng

许君聪

Scarface

梅婷

Ren Xiaotian's mother

Lang Lang

Lang Lang

黄觉

Ding Jieling's father

于洋