Unhappy Refrain16,998,522 Views SingerHatsune MikuVocaloidProducerwowakaProducerViews BreakdownYouTube9.9M ViewsNiconico7.1M ViewsDaily Views4.3K12/175.1K12/184.8K12/194.3K12/204.9K12/214.9K12/224.4K12/23VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB