Seventeen has thirteen members, and the maths behind the name explains why
Pledis Entertainment first imagined a boy band of 17 teenagers averaging 17 years old. After years of trial broadcasts and more than 30 hopefuls, 13 made the cut. The name survived by turning into a sum: 13 members plus 3 teams plus 1 group, a group that writes and choreographs its own work.
The plan dates to April 2012, when Pledis announced a boy group under the working title Seventeen, possibly split into units for South Korea, China and Japan. Debut kept slipping. Being a small company with few ways to advertise, Pledis streamed the trainees' training and daily lives online through Seventeen TV, so fans knew the faces long before any record existed. The company warned that nobody on screen was guaranteed a place.
That waiting period changed what kind of act they became. Woozi said the group was first prepared along conventional idol lines. Hoshi remembered trainees making up choreography to pop songs and recording music among themselves; when staff liked the results, Pledis adopted the self-producing concept. Han Sung-soo recalled members hauling their own lights and electric fans into evaluations for stage effects. The members spent roughly four years as trainees on average.
The final line-up was revealed in April 2015 through the MBC Music reality show Seventeen Project, and the official debut showcase came on May 26, 2015. Their first EP, 17 Carat, charted longer in the US than any other K-pop album that year. The fan club took the name Carat in February 2016, a nod to diamonds and to that debut record. Inside the group sit three specialist teams, hip-hop, vocal and performance, plus six smaller sub-units.
Success grew steadily. A 2017 run of Japanese shows drew 50,000 people before any official Japanese debut, which arrived in May 2018. The 2019 album An Ode sold 700,000 copies in its first week and earned their first daesang, a grand prize, for Album of the Year. Their 2023 EP FML became the year's best-selling album worldwide according to the IFPI, and live shows earned them nicknames such as Kings of Synchronization.
Source: Seventeen (South Korean band)
