T-ara
In December 2011, the group held a three-day concert tour in Tokyo, Nagoya, and Osaka. By the end of the year, T-ara had become the second most popular girl group in Korea. Also in December, T-ara made a ballad with Davichi called "Uri Saranghaetjanha" (우리 사랑했잖아, "We Were in Love"). It was later included on T-ara's Funky Town re-release album. "Uri Saranghaetjanha" made it to number one on the Gaon chart and number two on the Billboard Korea K-Pop Hot 100. Both groups performed the song on SBS's Inkigayo television show.