戦場のメリークリスマス
"Wonderland" was revealed as the album's name in September, and a preliminary release date of 30 November was forwarded. Recording took place at Sarm Studios in Notting Hill, London, and completed in early October. Smith recorded her vocals during her school holidays. Initially, Smith was asked by her label for a track listing, but said that she "didn't know what songs would be wrong or right for an album". Instead, she and Decca both created their own lists, and the final track list was compiled from the two. The result included a variety of songs; Smith said she was pleased with the mix, citing "classical numbers" like "The Prayer", in contrast to "a more unexpected song", "Close to You". The track "O Holy Night" features a "duet" with Luciano Pavarotti, who died in 2007; Pavarotti's vocals were digitally added to Smith's recording to produce the song. The title track, "Wonderland", is set to "Winter", from Vivaldi's "Four Seasons", and the lead track, "Merry Christmas Mr Lawrence (Somewhere Far Away)" is an adaptation of a piece by Ryuichi Sakamoto, originally from "Merry Christmas, Mr. Lawrence". Smith's favourite tracks on the album are "O Holy Night" and "The Prayer".