An English dub version was produced for the international market, featuring a North American cast and an English version of the main theme "Voices". When it came to Episode 4 of the original translation, due to a rights issue at the time, the entire soundmix including music and sound effects had to be recreated from scratch. Only the songs performed by Sharon Apple ("Pulse," "Information High," and "Santi-U(second half)/Torch Song") and the English version of "Voices" were retained. The background music entitled "Dogfight" was replaced with another track entitled "Breakout" (featured in Episode 1 and 2), notably in the main Dogfight sequence and just after Isamu recovers from his trance.