Tôn Thất An has just composed the music for An Ordinary Day 平常的一天, a short film from China directed by Li Ji. The two met and befriended each other at the Busan Film Festival in 2019, when Li Ji was premiering his first long feature A Road to Spring 通往春天的列车 and Tôn Thất An came with Trần Thanh Huy and the team of Ròm.