Voisper (Hangul: 보이스퍼; stylized VOISPER) is a South Korean vocal group formed in Seoul. It comprises vocalists Jung Dae-gwang, Jung Kwang-ho, Kim Kang-san, and Min Chung-ki, all of whom became friends in high school. After auditioning on Superstar K6 in 2014 as North Incheon Nineteen, the group was signed to Evermore Music the following January. A portmanteau of the words "voice" and "whisper", the quartet released its first mini-album Voice + Whisper in November 2016.