This is the 18693rd most frequent Korean word.
신시컴퍼니의
It refers to "of Shinsik Company," indicating possession or association with Shinsik Company.
The usage of "신시컴퍼니의" here indicates possession, connecting the proper noun "신시컴퍼니" (Sinsa Company) with the noun "새로운 공연" (new performance) to express that the performance belongs to or is produced by Sinsa Company.
신시컴퍼니의 새로운 공연이 드디어 개막합니다.
Sinsa Company’s new performance finally opens.
In this sentence, "신시컴퍼니의" illustrates possession and affiliation, linking "신시컴퍼니" to "멤버" (member), indicating the subject's connection with the company as part of its members.
그는 신시컴퍼니의 멤버로 활동한 경험이 있습니다.
He has experience working as a member of Sinsa Company.
Here, "신시컴퍼니의" ties "신시컴퍼니" to "역사" (history), denoting that the book talks about the company's historical outline or narrative.