In October 2018, the sculpture, Once A Tree II, was featured in a stage performance at the Yong Siew Toh Music Conservatory, NUS. The performance was a 25-minute opera by Claudio Monteverdi entitled Combattimento di Tancredi e Clorinda. The dancers and singers moved around the sculpture which is made up of many separate pieces. It worked beautifully for the performance as the pieces could be positioned and assembled on stage in whichever way the choreographer envisioned.

It was the first time that a Chong Fahcheong sculpture became part of a stage production. Commenting on the collaboration, Alan Bennett, Professor of Music at the Conservatory, said: “It really was a wonderful addition and allowed us to interact with the stage space so much better than we had even imagined.”