Tsai began his comeback by doing the music for Cloud Gate, after which he became well known in the arts community. Then he got working with Hou Hsiao-hsien, who invited him to write music for and appear in the classic film City of Sadness. That was when he was introduced to playwright Wu Nien-chen.
蔡振南在為「雲門」配音後，文化界人士都已經知道他，侯孝賢導演也請他為「悲情城市」寫歌並演出，經過引介，他認識了編劇吳念真，