Tablo, Mithra, and DJ Tukutz have been in the industry since the early 2000s. Their lyrics often carry a strong message, and there is even Tumblr for Epik High wisdom.
"Trot" and "High Technology"
"Don't Hate Me"
Let's Hear it for Rookie Groups
2013 has many rookie groups worth mentioning, and they're looking for fans.
Yell. O.W. "This is My Story"
Ladies Code "Bad Girl"
BTS "No More Dream"
Royal Pirates "Shout Out"
Shinhwa debuted in 1998 during the days of Sechkies, H.O.T., and S.E.S. They're still performing today, proving that everything gets better than age.
Fun Fact: Andy Lee was almost a member of H.O.T.
SS501,TVXQ (DBSK), JYJ
Fans continue to wait somewhat impatiently for these two groups to return. SS501 has not officially disbanded, though each of the members are now in the throes of solo careers. TVXQ is still around, but as a two-member group; the group split into TVXQ and JYJ when a contract dispute with SM Entertainment created controversy.
SS501 "Love Ya"
TVXQ (Current Configuration) "Catch Me"
4Minute and Hyuna
The girls from 4Minute are known for their vocal style, dance, and their sexy leader, Hyuna. Hyuna also has a successful solo career.
Beast, or for the "Nasties" out there, B2st, has become a powerhouse in the Kpop world over the past two years. While they have their Engrish moments like in "Shadow" and Yoseob's "Caffeine," their songs are catchy and iPod-worthy.
In recent years, SHINee has become one of the powerhouse groups in the Kpop industry through sharp dancing and vocals. Check out their performance from the 2012 MAMA to see their live performance of "Sherlock" and "Lucifer" with Exo!
In the early 2000s, BoA introduced many non-Koreans to the Kpop genre via lending her vocals to the Inuyasha OST and club hits. 13 years later, she's still proving while she is one of Korea's idol queens.
"Eat You Up"
Wonder Girls ft. Akron "Like Money"
T-Ara "Lovey Dovey"
Miss A "Touch"
Secret "Love is Move"
The Seeya "Be With You" (featuring Taewoon of Speed)
Step into the Man Cave
While not as big as super-rookies B.A.P and Exo and established groups like Big Bang and Super Junior, there are several male groups that produce great music yearly.