Miraclass is a South Korean crossover-quartet formed in 2017 on the JTBC audition program, Phantom Singer 2. The group consists of baritone Julian Jootaek Kim, tenor Phillip Jeong, pop tenor Kang-hyun Park, and bass Tain Han. They were the runner-up team on Phantom Singer 2. They participated in Phantom Singer concerts, released their album Romantica in 2018, and held their own concerts.
The members of the quartet pursued individual projects: Julian Jootaek Kim performed operas in Italy, and played the Phantom in the musical The Phantom of the Opera. Kang-hyun Park performed protagonist roles in musicals like The Man Who Laughs, and Mozart!, Hadestown, and Dear Evan Hansen, and appeared in a TV drama. Jeong and Han formed the jazz/easy listening duo "Feel in." Phillip Jeong released classical albums, and Tain Han has been producing adult-oriented and animation rock music in the indie scene and releasing albums. During the COVID-19 pandemic, they appeared in Phantom Singer All Stars.
The group conducted a national tour in 2022 and engages with fans through their UA-cam channel, launched in 2021.