Happy Synthesizer 4,842,049 Views SingersHatsune MikuVocaloidHanasato MinoriProject SEKAIKiritani HarukaProject SEKAIMomoi AiriProject SEKAIHinomori ShizukuProject SEKAIProducerEasyPopProducerViews BreakdownYouTube3.2M ViewsYouTube1.4M ViewsNiconico235K ViewsDaily Views1.8K12/172.2K12/183.7K12/1930412/202.3K12/212K12/223.5K12/23VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB