MayTree 메이트리 The Blue Night of Jeju Island June 2013

This is a short clip of MayTree singing "The Blue Night of Jeju Island" (제주도의 푸른 밤) on MBC. The date of June 2013 is an educated guess. There are promotional photos of MayTree from May 1st, 2013 that are quite similar except that S.I.'s hair was longer and darker. Hongseok Choi was replaced by Wonjong Kim in September 2013, so this video must be sometime in the summer of 2013.

MayTree at this time was five members:
Sang-In "S.I." Jang 장상인 (vocal percussion/founder) 2000 - present
Sookyung "Soo" Kang 강수경 (alto/music director) 2000 - present
Hongseok Choi 최홍석 (bass) 2000 - September 2013
Subin Choi 최수빈 (soprano) 2009 - 2013
Sunghyun "Kipp" Chun 전성현 (tenor) 2009 - 2017