Day & Night is the sixth extended play by South Korean girl group Kara, released on August 18, 2014, with the lead single "Mamma Mia".

Following her victory, DSP announced plans for the group to release a South Korean album in August before embarking on a concert tour in Japan on October.

[5] On August 1, it was revealed that its title track will also be released as single in Japan after it received good reviews from Japanese affiliates.

[6] The last track on the album, titled "Story", were co-written by members Park Gyuri, Han Seung Yeon, and Goo Hara.

Following her victory, DSP announced plans for the group to release a South Korean album in August before embarking on a concert tour in Japan on October.

[4] On August 1, it was revealed that its title track will also be released as single in Japan after it received good reviews from Japanese affiliates.