| Company | Timeline | Status | |
| The Liszt Society Director • Concert Agent | 15 Jul 1991←10 Months→6 Jun 1992 | Active | |
| The Liszt Society Secretary • Unreported | 15 Jul 1991←10 Months→6 Jun 1992 | Active | |
| The Liszt Society Director • Concert Agent | 19 Jul 1990←28 Years→17 Jul 2018 | Active | |
