Premise: Walkin' is the debut mini-album by South Korean singer Suran. It was released on June 2, 2017, by Million Market and distribuited by LOEN Entertainment. It consists of five songs, including "Wine" featuring rapper Changmo, previously released as a digital single, and the title track "1+1=0" featuring singer Dean.
Hypothesis: No less than three different singers can be heard on the album Walkin'