It B1A4 is the debut mini-album (EP) by the South Korean boy group B1A4. Released on April 21, 2011, through WM Entertainment and distributed by Pony Canyon Korea, this EP marked the official entry of the group into the K-pop music scene.
The album features a mix of pop, dance, and R&B tracks, showcasing the group's vocal abilities and diverse musical style. The lead single, "OK," served as the promotional track for the album, accompanied by a music video that introduced the members to the public. Other notable tracks on the EP include "Only One" and "Remember."
It B1A4 laid the groundwork for B1A4's career, establishing their unique sound and image. The mini-album received attention for its catchy melodies and the members' involvement in the production and songwriting processes, particularly leader Jinyoung. It charted on various South Korean music charts upon its release, contributing to B1A4's subsequent rise in popularity and establishing them as a promising new act in the K-pop industry.