Happy Synthesizer 4,745,687 Views SingersHatsune MikuVocaloidHanasato MinoriProject SEKAIKiritani HarukaProject SEKAIMomoi AiriProject SEKAIHinomori ShizukuProject SEKAIProducerEasyPopProducerViews BreakdownYouTube3.2M ViewsYouTube1.3M ViewsNiconico229K ViewsDaily Views2.2K11/012K11/022.1K11/034.2K11/04111/0512911/065.8K11/07VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB