If Big Bang or Block B has a little to much edge, or rapping for you, you might enjoy Kpop band Shinee. You can consider them the softer side of Kpop. They have gorgeous melodies and a smooth style. You might also enjoy their many sweet and funny appearances on Korean variety shows, like Hello Baby. [youtube=http://youtu.be/xzQ6pNlK7X0] Here is a Wikipedia's excerpt on them.
Shinee (pron.: /ˈʃaɪniː/ SHY-nee; Korean: 샤이니; Japanese: シャイニー; more commonly known and stylized as SHINee) is a South Korean contemporary R&B boy group under the management of SM Entertainment. Formed in 2008, the group consists of Onew, Jonghyun, Key, Minho, and Taemin. They made their debut on May 25, 2008 on SBS's Inkigayo with their single, "Replay".
Since their debut, Shinee has released three full-length albums (with one being a separate double-album release), four mini-albums, one live album and various singles. They have also won many awards, held three concert tours and starred in their own reality shows. Shinee is considered to be a fashion icon having started the "Shinee Trend" and are known for their highly synchronized and complicated dancing.