JYJ (composed of Kim Joon Soo, Kim Jae Joong, Park Yoo Chun) has garnered attention after choosing to perform a song that they had first released during their time as TVXQ.

Beginning April 2 until the 4th, over three days, JYJ opened their Tokyo Dome performance, titled, 'The Return of the JYJ in Tokyo.'

During this performance, JYJ sang 'Rainy Blue,' a song which they had first released in Japan in 2009 when they were performing as TVXQ. This song was chosen as the title song for the concert, despite JYJ having stated several times, "We won't be singing any songs that we sang as TVXQ."

JYJ, as former 5-member group TVXQ, had released 30 album singles as well as 3 albums during their run in Japan, releasing even more songs there than in Korea. After leaving SM Entertainment, JYJ was officially restricted from singing any songs they had performed during their run as TVXQ. JYJ was only able to sing 'Rainy Blue' because it was not an original song of TVXQ and thus the copyrights did not belong to SM Entertainment. The song actually belongs to famous Japanese singer, Tukunaga Hideaki, and was remade by TVXQ.

On the last day of the concert, Kim Jae Joong met with reporters after the performance and explained their reasons for selecting the song. "We chose it as a way to look back on our past memories and recollections," he said. "The song holds particular significance for us - we three who have come together for the first time in four years at this venue. It's a matter of retrospection and looking back on the past, and it is a song that holds a lot of dear memories for us."

Kim Jae Joong apparently had told everyone that on the last day of the performance, "We must sing this song, all three of us together."

This Tokyo Dome performance garnered an audience of overall 150,000 people over the three day concert.

Editor's Note:  Thank you for the very candid comments and reactions to this article.  We stand by the title as reported, as the content of the article included clarifying information.  Additionally, we are not the first to report or ask the question reflected in the title, as the original source in Korean asked the same question.  Further, the SM ban covers performance of songs not just previously released as TVXQ but also performed as TVXQ,unless of course SM doesn't have copyright to the song, which is the case with "Rainy Blue". Kim Jae Joong's comments at the press meeting with reporters reflect the bold step and risk JYJ took to sing this song despite it being closely associated with TVXQ, primarily for the memories and secondly because of all the songs they want to sing and cannot, this is the only one not within the jurisdiction of the SM Entertainment ban. Since it is a rendition/cover of Mr Hideaki's song, hence the song is JYJ's version of "Rainy Blue" as performed recently in Tokyo Dome.  Hope this helps settle the issue.