The group consists of four male vocalists, In Ho-jin, Song Woo-jin, Kim Young-woo and Sung Jin-hwan.
The name of the group, ``Sweet Sorrow,'' comes from Shakespeare's ``Romeo and Juliet.'' They came up with this name when they were going through hardships in 2002.
The four met at the Glee Club, the male choir of Yonsei University. In, the oldest and the leader of the group, explained how they formed Sweet Sorrow. ``The Glee Club had two concerts every year, summer and winter. Eight members of the choir formed an acappella group to try something new at the concerts and arranged songs that garnered good reactions from the audience. Later, only four of us were left,'' said In.
Although they come from a prominent university and could have chosen other career paths.
Their turning point as professional musicians came when they won the Yoo Jae-ha Music Competition in 2004. They received first-prize with their original namesake song, ``Sweet Sorrow,'' and they were contracted by several agencies. Finally, Sweet Sorrow signed a contract with Mezoo Cultures and released their first album named ``Sweet Sorrow'' in November 2005.
Their first album was not a big hit. Later, they worked on the soundtracks for the 2006 drama ``Alone in Love'' and ``War of Money'' in 2007 and got recognition. Later in 2007, they took part in ``Showvival,'' a Korean version of ``American Idol'' aired on MBC. Sweet Sorrow immediately gained popularity for their arrangement of hit songs and won during the program's second season.
The group is open to other fields such as acting and comedy on variety shows. For instance, leader, In, appeared as a guest star in an episode of KBS's ``Drama City''