TEENAGER is the second EP by South Korean rock singer, Jung Joon-young, released by CJ E&M on June 26, 2014, as the follow-up to his 1st mini album, which was released in October, 2013.

It contains 6 tracks such as the title track “Teenager.” and other tracks “내가나에게To Me,” “친구Friends,” “이빨Lip Service,” “Hold On,” and “돛단배Sailboat.” All songs in this album were composed and produced by Jung Joon Young himself. He also participated in the design and production of the album's concept, cover picture, and all other minor details regarding the album.

Since Teenager is filled with alternative rock genre which is not a mainstream in Korean music industry, it hasn’t been a big hit compare to his 1st mini album which topped on numerous online charts. However it did relatively well on the physical sales; it ranked third on Gaon weekly album chart in its first week of release as well as tenth on the monthly chart in its first month. It has sold over 10,000 copies within its three weeks of release.

As he stated about this album: "I know some aren't into rock, but I'm glad to be doing what I want to do. I know rock is not a popular genre, but it can be, if my music is widely heard." Regardless of the record charts, he is satisfied with his album just like his fans and supporters who really want him to do the music that he wants to do.

On June 19, 2014, CJ E&M announced that Jung Joon Young will be releasing his second mini album Teenager on June 26 of the year.

It had already been eight months since the release of his 1st mini album, he finally has returned as a rocker after spending most of the time on TV, appearing in a number of TV reality programs. Though Some fans were even worried that his image would become stuck as a TV figure and not a musician due to his frequent television appearances on entertainment shows rather than musical activities and the delay of his next album, he didn’t hasten to release the second album and just focused on making it perfect, as he referred that “It took me about eight months to prepare this album, which I felt was a very short period of time; but since the preparation process was really fun, I did not feel pressured to rush the new release."

While he was preparing for his 2nd mini album, “TEENAGER”, he tried to let his fans participate in making his album and share the concept of album. He asked his fans to join in filming his music video as extras and opened up comeback site to share photos of their teenage years on Instagram with the hashtag #IAMATEENAGER for a spot on the site.

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Wikipedia