Alone (Lay song)

"Alone (One Person)" (Chinese: 一个人) is a song recorded by Chinese singer Lay (Zhang Yixing) which serves as the original soundtrack for the 2015 romantic comedy film "Ex Files 2: The Backup Strikes Back". It was released on October 7, 2015.
Background and release.
Composed, arranged and lyrics written by Lay, "Alone" was officially released and disclosed to the public during a fan meeting at Shanghai Indoor Stadium which was coincidentally on his October 7, 2015 birthday.
Reception.
"Alone" ranked #1 on Baidu Music Chart and #4 on Billboard's China V Chart.