His orchestral appearances include concerts and tour with the Hong Kong Philharmonic, Hong Kong Sinfonietta, Qatar Philharmonic, Pacific Music Festival, Aspen Music Festival, Asian Youth Orchestra, Gustav Mahler Orchestra, and the Busan Maru International Music Festival, he was an ExxonMobil New Vision Artist at the 40th Hong Kong Arts Festival.
Siu received his music education at Sydney Conservatorium of Music and the Chinese University of Hong Kong, he graduated from the San Francisco Conservatory of Music as a scholarship student of Jack van Geem (San Francisco Symphony) and David Herbert (Chicago Symphony).
He embarked PROJECTTT in USA with award-winning Afiara Quartet to promote music for strings, percussion and tenor timpani, creating a platform for composers to experiment. Siu taught at the School of Creative Media in the City University of Hong Kong, he has also conducted masterclasses at the Hong Kong Baptist University, Kasetsart University, Silapakorn University, Xinghai Conservatory of Music, Hong Kong Music Office, Hanyang University and was a Teaching Artist at the San Francisco Symphony.
He currently serves as a part-time instructor at the Chinese University of Hong Kong and is an alumni representative of the Asian Cultural Council (HK) Foundation. Louis endorses Adams Percussion and JG Percussion Mallets.