Seotaiji's 15th anniversary album consisted of most of his works so far, re-recorded and re-mastered but it was released in a limited edition with only 15,000 copies available, each with unique serial numbers. Serial numbers #1-15 were purchased by Seotaiji himself. He kept #1 for himself, gave #2 and #3 to his old time friends Lee Juno and Yang Hyun Seuk, and the rest to his close friends. Since the re-recorded and re-mastered songs were only available for the limited anniversary album and not all the fans were able to purchase it, he decided to re-release all the albums with the containing the new versions. On April 3, the first two Seo Taiji and Boys Albums were rereleased. Taiji will rerelease all 7 of his albums, from Nan Arayo! to 7th Issue. On May 25, the 3rd and 4th Seo Taiji and Boys albums were rereleased.