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Erna told the Abc Radio Network last month that a friend of his, who's also one of the editors on the film, heard Erna's recently completed solo album and thought it would be appropriate for the movie. "He called me up when Stallone was looking for some music and asked," Erna said before adding that he "went and kind of custom-tailored a song" called "Sinner's Prayer" for "what [Stallone] wanted for this certain scene in the movie."
Sully told the Abc Radio Network that he has delayed the release of his solo CD to coincide with the film's arrival, which is expected early next year. He explained, "We're gonna push it back and try and tie it into the movie and do all that stuff."
Speaking to The Pulse of Radio, Erna described the material on his upcoming solo CD as "very epic" and "soundtrack-ish."
In late 2007, Godsmack released a greatest hits collection called "Good Times, Bad Times - Ten Years of Godsmack" and announced that it was going on hiatus. Erna worked on his solo album during this period, while the other three members of the group started a side project called Another Animal.
Godsmack is currently working on a new studio album for a spring 2010 release. It will be the band's first collection of all-new material since 2006's "Iv".