 Having finished full military service at the end of 2004, Hong Kyung Min returned with his sixth album, "Listen and Repeat", with a hit rock song "Tonight".Also featured on this album is "To My Friend", the music video for which had appearances by Hong's real life friends Cha Tae-hyun and Kim Jong-kook.In September 2006 the singer released his seventh album, "Evolution of Rhythm", which marked Hong's return to the rock genre.