Godzilla vs. Hedorah

Godzilla vs. Hedorah (ゴジラ対ヘドラ Gojira tai Hedora), originally released in the United States as Godzilla vs. the Smog Monster is a 1971 tokusatsu kaiju film produced by Toho, and the eleventh installment in the Godzilla franchise. The film was released to Japanese theaters on July 24, 1971.

Dubbing History
Godzilla vs. Hedorah was released theatrically in the United States in February 1972 by American International Pictures, under the title Godzilla vs. the Smog Monster. It was dubbed into English by Titra Studios, in the company's last work on a Godzilla film. No footage was cut or replaced, apart from shots of Japanese text. Notably, the anti-pollution song which reappears throughout the film, "Return the Sun!", was replaced by a new version with English lyrics called "Save the Earth," written by Adryan Russ and Guy Hemric and performed by Russ.

Prior to AIP's Americanization, Toho commissioned an international English dub from a company in Hong Kong, which went unreleased in English speaking territories until the Sci-Fi Channel aired it on January 20, 1996. The film was the first dub Toho would commission out of Hong Kong instead of Tokyo's Frontier Enterprises.