Pop sensation BoA unveiled her 28th single, ``Bump Bump!'' in South Korea Wednesday following its release in Japan on Oct. 28.
The single had aroused keen attention before its release as the album's jacket had shown a changed BoA with short hairs.
Verbal, a member of Japan's hip hop group M-Flo, took part in the production of the album as a featuring artist, according to Yonhap News Agency.
The song, ``Bump Bump!'' is a dance number with a jaunty rhythm.
BoA, 23, plans to hold Christmas concerts in Tokyo Dec. 4 and 5 and in Osaka Dec. 8.
BoA, who has been performing in Japan, released her U.S. album in March amid high expectations and has since been stepping up her American activities.