Also, three soundtracks composed by Hayato Matsuo have been released for the "Hellsing" OVA series ("Hellsing Ultimate"). "Hellsing OVA Original Soundtrack – BLACK DOG" Released on March 21, 2008. As well as a DVD-Audio mini-soundtrack released as an extra with "Hellsing" OVA IV in Japan, titled "Premium Disk – Warsaw Recording Selection" featuring nine tracks. The newest one is also an extra with "Hellsing" I-V Blu-ray BOX, titled "Nazi CD", featuring 13 tracks and one secret track. The vocal tracks by "Suilen" were released by the band on their recent mini-album "THE DAWN".