Focus
- Pierre Van Den Linden (born: 19 February 1946)
- 1973
Hocus Pocus 
- Focus entered the UK charts on 14 January 1973, spent 10 weeks in the charts and reached number 20.- Sylvia - Focus entered the UK charts on 21 January 1973, spent 11 weeks in the charts and reached number 4.
- 2010
- Hocus Pocus - Focus re-entered the UK charts on 06 June 2010 and spent a further 1 weeks in the charts reaching number 57.
- 1973
- Hocus Pocus - Focus entered the US charts on 03 March 1973, spent 19 weeks in the charts and reached number 9.
- Sylvia - Focus entered the US charts on 28 July 1973, spent 5 weeks in the charts and reached number 89.