Via tokyohive:

Sister unit of AKB48, SDN48, will be�releasing�their�major debut single, "GAGAGA", on November 24th, and it's been announced that "GAGAGA" will also be released in Korea on the same day. The producer of SDN48, Akimoto Yasushi, revealed the plans at the "Asian Music Industry Leaders' Forum", which was held in Seoul on October 23rd. �According to Akimoto, "GAGAGA" was made by a Korean composer, and there is a rap part in Korean. �He also said that the�concept�of �the song is "J-POP which sights on K-POP." Source: Yonhap News Tip: firefye