“Trouble” is the second digital single by Azer. It was released on April 9, 2022. On February 25, 2022, Azer released a teaser video titled “Trouble” for their upcoming comeback in March 2022. On April 2, a music video teaser was released and revealed that “Trouble” would be released on April 9. “Trouble” is described as a song about the troubles that occurs between ex-lovers even though they cannot forget each other. The song is arranged so that the atmosphere changes every time the part changes to the deep house genre. Member Jang Juyeon participated in the writing and composing of the song. Students majoring in Planning and Directing at Howon University participated in the music video, from directing to filming.
Azer (아째르) is a seven-member girl group formed by the K-pop department at Howon University. They debuted on March 4, 2021 with the digital single “Elegante”. Howon University’s K-pop department was established in 2019. Professor Shin Yeon Ah, who is the head of the department and a former member of the female vocal group Big Mama, wanted to create an idol group that did not follow the typical training that all idols have to go through. Seven first-year students were selected as the final members through an audition. For their debut song, the choreography was made by first-year students themselves while production team Stardust produced the song. Shin Yeon Ah prepared and conducted all the courses and also participated in the chorus sessions directly. They debuted on March 4, 2021 with the release of their first digital single “Elegante”. On November 24, 2021, Azer released the special digital single, “Pit a Pat”, which is a collaborative release between Azer and KOFAC.
