– Our daughter Sarah’s page:

– Our YouTube channel. Here you can find some videos of concerts I play as well as films of me at home practising solo pieces for concerts, as well as a couple of Sarah’s concerts:

– My wife Rachel’s website. She designs and makes great furniture:

–, the web’s most comprehensive mineralogy/geology database. I’m in the management board of Mindat:

–, Dutch based mineralogy site boasting a fantastic interactive map showing mineralogy related places of interest:

– Mineralienatlas, German mineralogy and geology site offering a very good mineralogy/geology Lexicon:

– Jan van den Berg, theatre maker. Jan makes theatre productions about science, especially physics:

– Baroque orchestra Collegium ad Mosam:

– Baroque orchestra Accademia Amsterdam:

– Baroque orchestra Cappella Maria Barbara:

– Baroque orchestra Musica Poetica:

– Antoinette Lohmann, violin, and Furor Musicus:

– Baroque orchestra Eik en Linde Amsterdam:

– Bonporti ensemble:

– Theatre company Ad Hoc:

– Theatre company De Utrechtse spelen:

– Theatre company Pra muziektheater:

– Baroque orchestra Florilegium:

– The Promenade orchestra:

– David van Ooijen, lute and guitar player:

– Hans de Wit, artist:

– Bullit klassiek, the best classical CD shop:

– TrackTo, Fantastic professional computer animations by Dirk van Poppel:

– Fields, sculptural acoustic innovations by Marjan Veltkamp:

– CombineZ, Allan Hadley’s brilliant (free!) stacking software:

– Business Printing Point, the printing wizards who print all my digital drawings:

– The Mineralogical Record, the renowned mineralogical magazine from the USA:

– Mineralienwelt, German mineralogical magazine:

– Lapis, German mineralogical magazine: