Three weeks before its release, the vampire romance "Twilight" accounts for 51 percent of advance sales on Fandango.com, the U.S. ticket broker said.

In a recent survey, the big-screen adaptation of Stephenie Meyer's young-adult novel of the same name was voted by Fandango moviegoers as the most anticipated movie of the season.

As a bonus, each "Twilight" advance ticket buyer who uses Fandango.com will receive a free music download of the exclusive track, "Bella's Lullaby."

Ninety-two percent of respondents to the ticket broker's survey of more than 5,000 moviegoers say they'll see "Twilight" on its opening weekend; 85 percent say they plan to see it more than once; 97 percent say they have read the novel and 95 percent say they are female.

"'Twilight' has the potential to be a box-office phenomenon and there's no denying the power of its core audience," Ted Hong, vice president of marketing for Fandango, said in a statement. "Several movies this year are striking a chord with female moviegoers, from 'Sex and the City' to 'Mamma Mia' to 'High School Musical 3.' 'Twilight' has a built-in fan base that is clearly passionate about the novel and can't wait to see it translated to the big screen."