Jo Wan-gong released the single ‘On Air’.

This song was introduced as a work that captures the Japanese jazz fusion sensibility of the 1980s in the form of a pop song.

It expressed the trembling and excitement at the moment of going on stage, and Wan-Gong Cho was in charge of writing lyrics, composing, arranging, vocals, MIDI programming, mixing, and mastering, while Seung-Woo Jin played the guitar, and Bryan Sik was in charge of directing vocals.