The One

"The One" is the opening track from EXO-CBX debut EP, Hey Mama!. It was released October 31, 2016 along with the extended play. A music video was released November 7 as a promotional single. The song peaked so far to #22 in Gaon Digital Chart.

Background and release
On July 29, 2016, Chen, Baekhyun and Xiumin appeared in a video titled "Reservoir Idols" during EXO's concert tour Exo Planet 3 – The Exo'rdium. As a result, it was speculated that they would form EXO's first sub-unit. This was confirmed by S.M. Entertainment on October 5.

On November 7, the "Reservoir Idols" video was officially released as a music video for "The One", one of the tracks from the album.

Song introduction
‘The One’ is a two-step garage song featuring synthesizer, bass, and brass sounds, and the sensuous lyrics describe a man’s heart  who could not help but surrender to the charms coming through all five senses of a woman he loves. Also, the delightful narration of members doubles the fun of listening.

Music video
The visual was featured as a VCR in EXO's third tour, The Exo'dium on July 29 under the title of "Reservoir Idols". The music video for the "second single" was released November 7, 2016. In the video, features the guest appearance EXO's member and leader, Suho.

The VCR and the music video got small differences with the typography and animation used in both videos.