| Company | Timeline | Status | |
| Central Music Library Limited(The) Director • Musicologist | 10 Nov 1992←3 Years→21 Jan 1996 | Active | |
| Anglo-Austrian Music Society,Limited(The) Director • Musicologist | 5 Jun 1991←4 Years→20 Jan 1996 | Dissolved | |
| Central Music Library Limited(The) Director • Unreported | 1 Jan 1970←26 Years→21 Jan 1996 | Active | |
