luhan was the second member of exo to be formally presented to the public on december 27, 2011. along with tao, chen, and kai, he made his first television performance at the "sbs gayo daejun" event on december 29 of the same year. the group's first single, "what is love," was released on january 30, 2012. the group released their second single, titled "history" on march 9. the pre-show showcase of the group was held at the seoul olympic stadium on march 31, 2012, one hundred days after the launch of the first trailer of its debut on december 21, 2011. the showcase was held for about 3,000 fans ff 8,000 selected candidates to watch their performances. the group held a press conference and showed their performances at the great hall of the university of economics and international business in beijing, china on april 1, 2012. on april 24, along with d.o., baekhyun, chen, boa, kangta, tvxq, taeyeon, yesung, jonghyun and luna, released a song for the soundtrack of the film "i am.", titled "dear my family". on august 23, 2012, s.m. entertainment announced that luhan would perform with boa in the song "only one," for the august 24 episode of "music bank". luhan became the fourth to perform with the singer after yunho, eunhyuk, taemin and sehun.