, is a Japanese pop and new-school inspired hip-hop duo consisting of members Halca (born April 21, 1988) and Yucali (born July 18, 1987) from Meguro, Tokyo, Japan. Its name is a portmanteau of and . Their debut album, Halcali Bacon, reached #5 on the Oricon charts, making it the first album by a female hip-hop artist to enter the top ten in Japanese history.
Halcali also made their American debut in May 2008 as the musical guests of honor at the Chicago Japanese culture, manga and anime convention, Anime Central. They performed again in America at Central Park, New York City on June 1, 2008 as part of a Japan Day Festival as part of a Japanese tourism campaign.
On May 30, 2012, Halcali released their fifth original album, Halcali no Okawari. The duo commemorated the album's release by holding a sold-out, one-man live at Shibuya Club Quattro on September 15, 2012. Halcali performed a total of 25 songs, spanning their musical career, and were joined by surprise guests Yosuke@HOME and Scha Dara Parr.