香港大會堂
Horologia sinica (渾天昏君) is a composition by the contemporary Chinese-British composer Jeffrey Ching. It was commissioned by the Hong Kong Chinese Orchestra, who premiered it under Yan Huichang on 6 March 2012 during the 40th Hong Kong Arts Festival at a concert marking the fiftieth anniversary of Hong Kong City Hall. The soprano soloist was Andión Fernández. The piece lasts about twenty minutes.