Chang Chou Han began studying the French horn at 13 and has performed professionally for 41 years. He has been principal horn at the Singapore Symphony Orchestra since 1987 and visiting principal horn with the Guangzhou, Shanghai, and Shenzhen Symphonies and the China Philharmonic. He has also played with the Berlin Philharmonic, Munich Radio Philharmonic, Boston Symphony, Saarbrucken Radio Symphony, and Dortmund Philharmonic. 
 
Han was a soloist with the Singapore Symphony at the 27th International Horn Society workshop in Yamagata, Japan, and one of the soloists in Schumann's Konzertstück for four horns with the Shanghai Radio Symphony Orchestra. He has collaborated with artists including Mstislav Rostropovich, Seiji Ozawa, Claudio Abbado, Christoph Eschenbach, Stefan Dohr, Cho-Liang Lin, and Riccardo Muti. In 2014, he recorded Strauss' two horn concertos with the Singapore Metropolitan Festival Orchestra as part of the composer's 150th birthday celebration.
 
Han has been a Professor of the French horn at the Yong Siew Toh Conservatory of Music, National University of Singapore, a position he has held since 2003. His first mentor was his father, renowned horn player Han Xian Guang. Han studied under Liang Kechao before entering Shanghai Music Conservatory, where he studied under Wu Zhuxi and his father, Han Xian Guang. His other teachers include Barry Tuckwell, Douglas Hill, Hans Pizka, Philip Myers, and Gerd Seifert.