Playback's Hayoung has revealed her friendship with renowned producer Harvey Mason Jr.  

On September 7th, Hayoung shared the above shot of her with the famous producer. Many were surprised to see the affectionate-looking vibe. Of the photo she explained that Harvey Mason Jr. is a sunbae from Crescenta Valley High School, the high school she attended while living in the United States. Further she shared, "Harvey Mason Jr., who is a senior at my high school, and is a famous producer worldwide, came to visit us at our practice. Thank you so much for your kind words and advice."

SEE ALSO: (G)I-DLE's Minnie and Yuqi share their candid thoughts on their upcoming contract renewal period

Harvey Mason, Jr. is a six-time Grammy Award-winning American songwriter, record producer and movie producer. He has written and produced songs for many industry heavyweights including: Azealia Banks, Whitney Houston, Britney Spears, Beyonc�, and Justin Timberlake. He also has produced for several K-pop stars including: EXO, TVXQ, SHINee, Taeyang and Girls' Generation.