Boy'z - Sun Boy'z (with William Chan)

Sun Boy'z (with William Chan)

On June 26, 2006, winner of 2003 International Chinese New Talent Singing Championship - Hong Kong Regional Finals, William Chan (陳偉霆, born November 21, 1985) joined the group and Boy'Z was eventually renamed as Sun Boy'z. They released their first single called "Tic Tac Toe" shortly before June 2006, from their self-titled debut EP. This EP includes the song "拜金小姐" which was sung and performed by only Dennis and Steven because the song was recorded prior to William joining the group. Therefore, the Mandarin version of this song, "好時代", has William on lead vocals completely. The group made a sudden street performance on September 3, 2006.

In early 2007, Sun Boy'z recorded the cover version of the song "Little Wonders" by Rob Thomas called "由夢開始" for the Hong Kong version of "Meet The Robinsons". On January 2, 2007, the group released a new music video and song "3+1=1". The song features former member Kenny Kwan and the title's meaning is referring to the four of them always being together as one, even though Kenny is no longer a member of the group. This song is on their greatest hits album All For 1, released on March 22, 2007. The album includes the best of Boy'Z and Sun Boy'z songs along with 3 new songs. After having success in the cantopop music scene, their record company EEG decided to have them turn to mandopop and a new Mandarin album titled 初次約會 (First Date) was released on December 17, 2007. They have been promoting the new album in the Guangzhou and other parts of China since the release of the new album.

Their duet song "大不了 (No Big Deal)" along with a music video they recorded alongside labelmate Yumiko Cheng, was released on February 1, 2008 in Yumiko's album titled 超模 (Super Model).