Yesterday

Yesterday is a track off B1A4's fourth Korean EP, What's Happening?.

The song was also included in their second Japanese studio album, 2.

Composition
The Korean version of the song was composed and written by Seo Yongbae and Lee Ki with raps written by Baro. The Japanese version of the song had lyrics translated by MEG.ME.

As stated by Gongchan:

Japanese Version
Yesterday is set as the sixth track off B1A4's second Japanese studio album, 2.

Korean to Japanese translations of the lyrics was done by MEG.ME.

Lyrics
See Yesterday Lyrics