In case anyone's wondering about the mentions in text:
Top 5 Girl Groups: "Their MVs are almost "dramas", some versions going beyond 20 minutes. They have style, charm. Their titles "Roly Poly" and "Lovey Dovey" are big choregraphy successes."
Top 5 Music Videos: "Cry Cry" and "Roly Poly" from T-ara. Both exist in short, middle length and long versions, and tell real stories.