Samuel Seo (Seo Donh-hyeon) released his first album in 2015. His 2018 album Unity features the track “Keep It Simple,” composed by Seo and arranged by Sung Ki-moon, Joseph Choi, Jaeho Kim and Jun Beck. Featuring jazz pianist, the track sports a sparse arrangement that allows the twinkling jazz piano and soft percussion to complement Seo’s always stellar vocals. As Seo’s vocals increase in intensity, so too does the improvisation on the piano and the prominence of the drums. For someone often associated with hip-hop, this track showcases the versatility of Seo’s style by delving into jazz.