Korean pop became globally popular two years ago when comedic singer PSY released “Gangnam Style,” making it a viral and most viewed video ever. It set the stage to open K-Pop into other countries with more ease. But, every era of promotion has a different concept.

The world’s No. 1 girl group, 2NE1, set a new U.S. record for the highest-charting, best-selling K-Pop album with “Crush.” What is making this album such a big hit?

The tracklist contains 10 songs, two of which are title songs and two others that have music videos. “Come BackHome,” both a title song and a music video, holds a soft mellow tune throughout the song. But during the chorus, it mixes into the techno jamming session that envelops one into it.

In the music video, they inserted “Come Back Home (Unplugged Version)” in a scene to tease and to pull in the listener to discover the rest of the album.

“Gotta Be You,” the second title song in the tracklist, is a mix of ballad and hip-hop. Its chorus will leave one humming the catchy tune all day. The meaning conveys that even though people can break up, feelings could still linger in the relationship.

“Happy,” which is also a title song and a music video, sends the message of letting someone go if it’s for the greater good. They wish their lover to be happy without them, even though they are lonely and miserable. Although it is rather a gloomy song, it is sung in a very upbeat tune.

Most of the songs in the album speak of love. Lee Chaerin, better known by her stage name, CL, is the leader of 2NE1.

She wrote several of the songs herself, including her solo, “MTDB.” Known for being confident in her songs and on stage, she raps about the power and fierceness she grasps within herself.

“Scream” was released two years ago as 2NE1’s first Japanese single. The Korean version in this album does not only change the language back to default (from Japanese to Korean), but also alters some of the lyrics. Even the first line is changed from English to Korean.

Being under YG Entertainment, one of the many known music companies in the K-pop industry, makes it easy for 2NE1 to be one of the best. They are also group members with BIGBANG, a fairly popular boy group, and the famous PSY.

Overall, 2NE1 accomplished a successful promotion era. They gave a new splash of taste, along with their signature styles. Their next comeback is definitely something we will all be waiting for.