Filled with real trumpet, saxophone and trombone sounds, "SoulMate" is full of an analog feel and it was arranged in such a way that exudes a vintage vibe. This R&B soul song centering on the theme of "soulmate" features IU, who helped perfect the song.

This is the lead track of ONF's second mini album, "YOU COMPLETE ME." With a house beat that sounds fresh and energetic, "Complete" highlights the youthful and manly sides of the group through the contrasting qualities of the verses and the chorus. The part, "I don't know if you'll believe me, but you complete me," captures the message of the song.

This is the lead track of MBLAQ's debut single record, "Just Blaq." It has a heavy hip hop beat combined with intense synthesizer and guitar sounds, and it represents MBLAQ's start as a new band. The speedy drum work, the fun rhythm of the rap and the addictive chorus, "Oh Yeah," add some charm to the song.

This is the lead track of ASTRO's first studio album, "All Light." This song centers on a man who wants to talk to his girlfriend all night long. The music video presents a fantastic garden where there are beautiful flowers in full bloom, as a way to depict love.

This is the lead track of Baek Yerin’s second solo mini album, “Our Love Is Great.” It describes how the worries and anxious feelings that arise in a romantic relationship are usually not the couple’s fault and that they will actually help them grow stronger.

This is the lead track of DAY6's digital single record, "Every DAY6 January." It centers on a man who agonizes over a girl who doesn't not explicitly express how she feels about him. DAY6 is definitely going to leave a strong impression with the powerful sound of this song.