The trailer for Hearthstone's latest expansion, Journey to Un'Goro, doesn't feature anyone bursting into song. This came as a disappointment to many fans, given that the trailers for previous expansions like Mean Streets of Gadgetzan and The League of Explorers included corny but loveable songs. The Journey to Un'Goro trailer has some epic music in the background and a fun monologue, but no one bursts into song -- at least, until now.