Variations on Geylang Sipaku Geylang for organ solo (2024)

  • Commissioned by the American Guild of Organists Student Commissioning Project

  • Written for and recorded/performed by Isaac Lee (recording to be uploaded)


Before Daybreak for solo violin (2022) 7.37’

  • Commissioned Work for the 2022 Singapore International Violin Competition

  • Premiered by Tianyou Ma and eleven other semi-finalists


    Before Daybreak pays homage to solitude and loss, and is inspired by Chinese poet Bai Juyi’s Song of Everlasting Sorrow. A violinist and Chinese instrumentalist herself, Koh connects elements of Chinese music such as erhu (Chinese fiddle) technique with her work for solo violin, in a “musical poem dedicated to all forms of yearning”.

    - Singapore International Violin Competition press


Twilight Hues for solo viola (2020) 4’

  • For Ensemble InterContemporain

  • Recorded by Jack Stulz


Tota pulchra es for solo piano (2018) 4.37’

  • Recorded by Tengku Ahmad Irfan

  • Performed at 2023 Singapore International Piano Festival

    “It began with an eruption of violence, the atonal music later transcending to a realm of inner peace, with lyrical centres which channelled spirituality through Messiaen-like chords.” - The Straits Times, Singapore


Common Iora for organ solo (2022) 4.18’

  • Commissioned by Modulah Collective

  • Recorded by Phoon Yu