"Headbanger" (ヘドバンギャー！！, Hedobangyā!!), written in official English releases as "Headbangeeeeerrrrr!!!!!" is a single by the Japanese heavy metal band Babymetal. Released in Japan on July 4, 2012 in promotion for the album Sakura Gakuin 2012 Nendo: My Generation, the single serves as the third single from the debut album Babymetal. It is also the band's first solo audio release.

Unlike previous tracks released by the band, which had her vocal recorded in segments within the songs, Nakamoto had her lines recorded in a single take several times. She had been told to sing and find a story within the music. By the time she had comprehended the story behind the lyrics, she grew capable of singing the entire song naturally. When Mizuno and Kikuchi listened to her shouting "Headbangeeeeerrrrr!!!!!" for the first time, they felt as if they had seen another cool side of her, surprised by the vocal power. Additionally, the single introduced the members to the whispering style of singing, with the A-side's "Disappear!" and the B-side's "Uki Uki Midnight". Kobametal was inspired to use it to contrast traditional death growls.

The single was released in two versions: a standard edition, available via CD and digital download, and a physical limited "Head" edition, which contains the CD as well as a "neck corset" (actually a cervical collar) for headbanging training. Both editions of the single feature the songs "Headbanger" and "Uki Uki ★ Midnight" (ウ・キ・ウ・キ★ミッドナイト, "Exhilarating Midnight"), along with instrumental versions (labeled as "Vocal Air Ver."). The enhanced CD also contains a bonus music video of "Babymetal Death", which can only be played on a computer. The artwork of the standard edition depicts a lyric in the song, specifically when the girl is headbanging with the corset, with the crimson-colored moon in the background, as well as the band name appearing at the top. The limited edition artwork depicts a temple scripture of the "Corset of Legend" with the song title spelled out in the middle.

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