Hush Rush

On September 15, 2022, WM Entertainment announced that Chaeyeon, former member of Iz*One, would be debuting as a soloist in October 2022.^[2] On September 29, it was announced Chaeyeon would be releasing her first extended play titled Hush Rush on October 12.^[3] On October 5, the track listing was released with "Hush Rush" announced as the lead single.^[4] Six days later, the tracks sampler teaser video was released.^[5] On October 12, the music video teaser for "Hush Rush" was released.^[6] The EP was released alongside the music video for "Hush Rush" on October 12.^[6]

Hush Rush consists of four tracks. The lead single "Hush Rush" was described as a "emotional" dance-pop song with lyrics about "feeling the most freedom on stage like a vampire who wakes up and dances freely under the moonlight and falls in love with that self". The second track "Danny" was described as a "80s vibe" synth-pop song with lyrics about "the comparison of fan's relationship with their idols for a long time to a lifelong couple". The third track "Aquamarine" was described as a song "with a groovy bass characterized by various instrumental". The last track "Same But Different" was described as a dance song.^[7]

Hush Rush debuted at number ten on South Korea's Circle Album Chart in the chart issue dated October 9–15, 2022.^[8]

Prior to the release of Hush Rush, Chaeyeon held a live event to introduce the extended play and its song, and to communicate with her fans.^[9]