Sing for You is the fourth extended play by South Korean-Chinese boyband EXO. It was released by S.M. Entertainment in Korean and Chinese versions on December 10, 2015. The album held the record as the fastest selling album in the history of South Korean album sales chart Hanteo, until it was overtaken by Exo's third studio album Ex'Act in June 2016.

On November 24, 2015, EXO was confirmed to be releasing their second winter special album, after Miracles in December (2013). Teaser images for the album began to be released from December 2. The album's track list, including four new songs and a bonus track "Lightsaber", previously released as a single in November, was announced on December 7. Finally, the mini-album was released digitally and physically on December 10.

On December 10, 2015, shortly after Sing for You was released, EXO held a showcase with an audience of 1,500 to promote the album at Lotte World in Seoul, South Korea. The showcase was live streamed using the mobile application V and afterwards set the record as the most-watched live stream ever on the application. Exo began performing the songs "Sing for You" and "Unfair" on Korean music shows from December 12 and 18 respectively. They also added these songs to the setlist of their second solo concert tour The Exo'luxion starting from the Singapore show on January 9, 2016.

On November 4, 2015, EXO was announced to be releasing "Lightsaber", a promotional song for the movie Star Wars: The Force Awakens in South Korea, as part of the collaboration project between S.M. Entertainment and Walt Disney. A teaser video for the song was released on November 8, followed by its music video and digital release on November 11. "Lightsaber" was later announced to be included in Sing for You as a bonus track on December 7. Exo performed the song for the first time at the 17th Mnet Asian Music Awards. The song peaked at number 9 on Gaon's digital chart.

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