Seventeen (Hangul: 세븐틴), also stylized as SEVENTEEN or SVT, is a thirteen-member South Korean boy group formed by Pledis Entertainment in 2015. The group is separated into three different sub-units with different areas of specialization: a 'hip-hop unit', 'vocal unit', and 'performance unit'.The group's members are deeply involved in the composition and production of their tracks and their choreography, leading to them being given a nickname as a "self-producing" idol group.