It spawned the single "We Belong Together" featuring labelmate Park Bom, who would later debut as a member of 2NE1.

The song is an R&B track that presents a rhythmic up-tempo tune with rap passages.

[1] Upon its release, Big Bang First Single debuted and peaked at number five on the monthly MIAK album chart issue for August 2006, selling 17,159 copies within three days.

[2] In the following month, it dropped to number 16 and sold an additional 9,452 copies.

[3] On the 2006 year-end album chart ranking, Big Bang First Single sold 36,420 copies and was the 35th best-selling album of the year in South Korea.