T-ara, currently gaining popularity for their new album comeback track, "Yayaya", revealed that the song was actually produced for labelmate Co-Ed's debut. A representative of Core Contents Media spoke with Star News on December 2nd and stated, "T-ara's latest track, 'Yayaya', was for rookie group Co-Ed's debut. After both groups listened to it, T-ara felt that it fit their group's image better, which is why it was confirmed as the title track for their comeback album. All of the T-ara members have a strong affection for this song. Co-Ed was satisfied with 'Too Late' and shared the song with their seniors." He continued, "Another song in the album, 'My Boo,' was also for Co-Ed. Co-Ed gave up the song to their seniors after seeing them sing it beautifully." Source: Star News via Nate