JoJo was serialized in Weekly Shonen Jump from 1987 until 2004, when it then transferred to the monthly seinen magazine Ultra Jump, where the story continues. The series has over 95 million copies in print, making it one of the best-selling manga series in history. Filling over 100 volumes (for a total of ~20,000 pages), it is Shueisha's second longest-running manga series. Publication in English of the earlier parts of the series is ongoing. JoJo's genre spans Action, Adventure, Supernatural, Thriller/Suspense, Comedy, Mystery, and Horror. It is perhaps most popularly known for its Stand phenomenon; the Stardust Crusaders arc and its characters DIO and Jotaro Kujo; the expressive rendition of its proud, glamorous personalities; and its hundreds of nominal references to Western popular music.