B1A4's second Japanese studio album, 2, was released March 19, 2014.
B1A4 advertisements promoted the album by announcing three different versions of the album: a regular album, an album and DVD set, and an album and goods set. While all three contain a Japan-exclusive application card, the album and DVD set exclusively includes the music video and behind-the-scenes footage of the Japanese music video for What's Happening?.  Alternatively the album and goods sets comes with the album and a randomly packaged ring of three different versions. 
The album features five tracks from their Korean albums and EPs converted into Japanese while the remaining three of eight tracks are original songs.
|1||Believe In Love||Goro Matsui||Christian Wahlberg|
|2||Starlight Song (Japanese Version)|
|3||Angel Eyes||B&C Factory|
|5||Tried To Walk (Japanese Version)|
|6||Yesterday (Japanese Version)||Lim Su Ho|
Seo Yong Bae
|Lim Su Ho|
Seo Yong Bae
|7||What's Happening? (Japanese Version)|
イゲ ムスン イリヤ ~なんで?どうして?
|8||You Are My Girl (Japanese Version)||Baro|
|Total Length: 30:57|
B1A4’s second Japanese album has reached #3 on the Oricon charts.
- ↑ http://www.amazon.co.jp/2-%E9%80%9A%E5%B8%B8%E7%9B%A4-B1A4/dp/B00HWK3AA8/ref=sr_1_4?ie=UTF8&qid=1394850607&sr=8-4&keywords=b1a4
- ↑ http://www.cdjapan.co.jp/detailview.html?KEY=PCCA-4005
- ↑ http://www.cdjapan.co.jp/detailview.html?KEY=PCCA-4006
- ↑ http://www.amazon.co.jp/2-%E5%88%9D%E5%9B%9E%E9%99%90%E5%AE%9A%E7%9B%A4A-B1A4/dp/B00HWJPII6/ref=sr_1_1?ie=UTF8&qid=1393576376&sr=8-1&keywords=b1a4+2
- ↑ http://www.songkick.com/concerts/19152969-b1a4-at-yokohama-arena-heng-bang-arina
- ↑ http://news.kstyle.com/article.ksn?articleNo=1991089&categoryCode=PU
- ↑ http://bwun-a4.tumblr.com/post/80212546067/b1a4s-second-japanese-album-reaches-3-on