Prokofiev's version ends with Peter capturing the wolf and leading a triumphant procession to the zoo, paining music-loving environmentalists with romantic visions of wolves in the wild.

In the new version, narrated by former U.S. president Clinton and called Wolf Tracks, Peter again captures the wolf, but this time repents of his act and releases the animal, who howls a grateful goodbye.

"Forgetting his triumph, Peter thought instead of fallen trees, parched meadows, choked streams, and of each and every wolf struggling for survival," Clinton narrates.

"The time has come to leave wolves in peace," he adds.

French composer Jean-Pascal Beintus wrote the score for the new wolf-friendly version while former Soviet leader Gorbachev provides an introduction and epilogue.

"In Prokofiev's classic, man dominates, but Wolf Tracks expresses quite different values of balance and tolerance. All of us hope for a future where these values are lived every day," Gorbachev said.