Happy Synthesizer 4,777,450 Views SingersHatsune MikuVocaloidHanasato MinoriProject SEKAIKiritani HarukaProject SEKAIMomoi AiriProject SEKAIHinomori ShizukuProject SEKAIProducerEasyPopProducerViews BreakdownYouTube3.2M ViewsYouTube1.4M ViewsNiconico231K ViewsDaily Views2.3K11/163K11/171.7K11/181.7K11/192K11/202K11/212.5K11/22VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB