Girl group Secret Number's new single was unveiled on major music-streaming sites on Nov. 4. The single "Got That Boom" follows the release of their debut single "Who Dis?" in May.

The rookie girl group have already established themselves on the K-pop scene with impeccable stage performances and singing skills that belie their limited experience. They have swept various K-pop music charts, and are nominated for a number of year-end awards given to the best rookies.

Their individual photos along with teaser videos for their latest single have already garnered over 1 million views each, which is rare for a rookie band, and the number of accumulated clicks is expected to reach 10 million soon.

The name of the five-member multinational group, consisting of Denise, Dita, Jinny, Léa and Soo-dam, signifies their wishes to carve out a special place eternally in the hearts of fans, just as passcodes are usually made up of special numbers with a personal significance, such as birthdates or other important anniversary dates.