Sumin had been a member of Toa Payoh Guitar Club from 1999-2008. She had performed as a soloist, ensemble and guitar orchestra in Toa Payoh Guitar Club organized public performances, such as ‘Beautiful Sunday, Sharing Songs of Summer 2007’ in Esplanade Concert Hall, ‘ASEAN Serenade, 2008’ in Esplanade Concert Hall, ‘NAFA 75 Anniversary Concert, Esplanade Concert Hall, and ‘Rhythm Nation – SA Guitar Quartet, 2013’ at the Esplanade Concourse.
She has been a guitar instructor since 2007. Currently she is a guitar teacher in Mandeville Conservatory of Music. She had been an Art Director of Media Zone for 10 over years, which she had published ‘Entertainment Time, Guitar Methods for Young Beginners’.
Sumin won the Semi Finalist in 5th International Guitar Competition 2011 (Singapore). She used to have masterclasses under Yang Xue Fei, Josep Henrique, Richard Wright, Philippe Loli and Joseph Mirandilla.