Peak (PEAK & PITCH)



  • Stage Name: Peak

    Birth Name: Jeong Sa Gang (정사강)

    Position: Vocalist, Rapper, Dancer

    Birthday: October 26, 2002

    Zodiac Sign: Scorpio







    II. Career



    He is a former member of boy group TheEastLight.


    They debuted with the single “Holla” on 3rd November 2016 under Media Line Entertainment.

    On October 22, 2018 Media Line Entertainment terminated the exclusive contracts of the members, leading to the group’s disbandment.



    He is now a member of PEAK & PITCH.

    They are a South Korean duo under Peak Entertainment, consisting of members Peak and Pitch.

    On August 9th, 2021, they made their debut with their single, ‘Iko Iko’.









    III. Discography



    I. Collaborations

    • "Love is..." (with Lee Woo Jin) (2017)


    II. OSTs

    • "I Can See Your Voice 4 Part.3" ("Café Latte" with Lee Eun Sang) (2017)


    III. Other releases










    IV. Peak Facts



    He was born in Seodaemun-gu, Seoul, South Korea.


    Sagang appeared on 10 MINUTES LIVE where he covered Etham’s 12:45, Pink Sweat$’ Honesty, and Lauv’s I Like Me Better.


    — He was formerly under Media Line Entertainment.


    — He can speak English.


    — Sagang collaborated with fellow former TheEastLight member Woo jin on a single, titled ‘Love is…’, in 2017.


    — He can play a few instruments, although he only knows the basics.


    — He learnt how to play instruments from his former band members.


    — Rapping is his specialty.


    — Sagang was a contestant on MNET’s ‘The Voice Kids’. He was on Yang Yoseob’s team. He made it to the Top 8.


    — When he was 7 years old, he used to be called ‘Tomato’.


    — In 2017, he released an OST for ‘I Can See Your Voice’ together with Eunsung, titled ‘Café Latte’.


    — In 2020, Sagang released a single, titled ‘Paradise’.


    — He often uploads dance covers on his TikTok.


    — He is friends with Korean-Sri-Lankan actor Ji Dae Han. Dae Han has appeared in a few of their covers.




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