Answer
"Ngày mai" is the name of the song that became one of Tóc Tiên's signature hits after her participation in The Remix. The song was released in 2014 and was written by Tiên and Nguyễn Hoàng Anh. It is a dance-pop song with a catchy melody and upbeat tempo. The song was a huge hit and helped to establish Tóc Tiên as a major pop star in Vietnam.