AKB48's Senbatsu single "Sentimental Train" has been re-recorded to include the election winner Jurina Matsui.
Matsui was supposed to be the center of the single. However, after the election was over, she went on hiatus due to poor health.
As the release date of "Sentimental Train" approached, it became apparent that Matsui would be unable to participate. The song was recorded without her vocals, the cover art was shot without her, and a music video was filmed without her. It was the first time in the group's history that this occurred.
For the past month, Matsui has been busy recording and shooting footage so she could be included on the single and its music video. The process has been completed, and the new version, labelled as the "finished version", was released on October 25.
People who had bought the single in it "unfinished" version will be eligible to use their serial number to obtain the "finished" version.