Cover dance is the act of replicating a dance choreography, particularly from Japanese idol or Korean idol music acts and Vocaloid songs. Cover dances may be uploaded onto video-sharing services like
Fans performing the "Hare Hare Yukai" dance at Anime Expo 2007.
An idol is a type of entertainer marketed for image, attractiveness, and personality in Japanese popular culture. Idols are primarily singers with training in other performance skills such as acting,
AKB48 (pictured 2009) is Japan's best-selling idol group and holds the Guinness World Record for "largest pop group", with more than 90 members divided among several teams.
Morning Musume (pictured 2016), the longest-running female idol group, renewed interest in idols in the 1990s. They hold the record for the most consecutive top 10 singles for any Japanese artist.
Momoiro Clover Z (pictured 2012) ranked number one among female idol groups, according to The Nikkei 2013–2018 surveys.
Babymetal (pictured 2014), whose third studio album, Metal Galaxy, is the highest charting Japanese-language album on the US Billboard 200 chart.