Complex sentence: The DVD contains complete footage from Ayumi Hamasaki's Countdown Live concert welcoming the year 2008, it also celebrates the 10th Anniversary since Hamasaki's debut with the single Poker Face released in April 1998.
Split into simpler sentences: The DVD contains complete footage from Ayumi Hamasaki's Countdown Live concert welcoming the year 2008. It also celebrates the 10th Anniversary since Hamasaki's debut with the single Poker Face released in April 1998.