her fifth Korean language album, On & On, because she felt that she was finally comfortable and confident singing and composing in Korean. It took her about two years to make the album and, during that time, she became very involved with the production and creative work behind the album; she helped with many of the song arrangements, played the piano and guitar for some of the tracks, and composed four of the songs on the album. In 2007, she performed the opening theme of the Japanese anime television series Romeo x Juliet, which is a Japanese cover of Rolf Løvland and Brendan Graham's song You Raise Me Up. The single also includes a cover of the English version. Her sixth Korean album, Come To Where I Am, was released on December 11, 2007. All songs were written and produced by herself. On February 27, 2009, she released her seventh album titled 10 Ways To Say I Love You with nine new tracks and "Secret" () as lead track. On June 6, of the same year, she released a repackaged edition to include another title track, "Flood of tears" (). 2012: Parallax After announcing the release of her eighth studio album, videos of her with composers she was working with for her album introducing her songs were released online. Shortly after, on June 19, 2012, her album Parallax was released with the title track, "Sorry" (Korean: 미안해), being a remake of the Spanish language song Mientes by Mexican pop band Camila. After that, in July she featured for the Psy song What Would Have Been(;ottessulkka), that sold over 2.000.000 digital copies in 2012. At the end of the year she released the Christmas song White Winter () with Kim Bom-soo and the special album Gift, with a reboot of Parallax album songs and where she sings again the songs of I Am a Singer program. 2013–present: Mainstream success In 2013 she released the cover of Atlantis Girl (), originally sung by BoA, for hwangseongje project superhero 1st Line up, the O.S.T My Everything for the variety show We Got Married and the O.S.T. My Wish/Only In My Heart () for The Heirs drama. On September 18, 2013 she won the special episode of I Am A Singer - Best 10 ( Best 10), beating Insooni for only three votes. In 2014 she started the project Syncrofusion with Next Year ()