Four of the seminal works in the marimba repertoire were written for him; Peter Klatzow's Dances of Earth and Fire, Alejandro Vinao's Estudios de Frontera, Martin Bresnick's double marimba concerto, Grace, and James Wood's Spirit Festival with Lamentations. Spirit Festival is unique in introducing the newly developed quarter-tone marimba, an innovative instrument recalling the marimba's ancient sonic routes while establishing new parameters for modern expressionism.
In his varied performing career, van Sice has appeared as a soloist with symphony orchestras and given recitals in more than 30 countries throughout Europe, North America, Africa, and the Far East. The Journal de Geneve describes his interpretation of Toru Takemitsu's concerto Gitimalya as marvelous. In his hands, the marimba becomes a voice with richness of sound and expression that one would never expect from a percussion instrument. A well-deserved triumph. He is frequently invited to appear as a soloist with Europe's leading contemporary music ensembles, including the London Sinfonietta, Ensemble Contrechamps in Geneva and L'Itineraire in Paris. Van Sice has also appeared as a soloist with many of percussion's finest ensembles including Amadinda, Kroumata, Tambuco, Percussive Rotterdam, and So Percussion.
In 1989, van Sice gave the first solo marimba recital at the Concertgebouw in Amsterdam. He has since appeared in many of world's major concert halls in London, Paris, Vienna, Madrid, Milan, Stockholm, Oslo, Tokyo, Beijing, Seoul, Toronto, Mexico City, New York, Chicago, and Los Angeles. His concerts have frequently been broadcast by the BBC, Swedish Radio, Norwegian Radio, Radio France, WDR, and NPR, among many others. He is a frequent guest at major music festivals throughout the world, such as Ars Musica, Blossom, Darmstadt Course for New Music, Archipel, London Meltdown, Norfolk Chamber Music Festival, Bela Bartok Festival in Hungary, North American New Music Festival and the Ultima Festival in Oslo. Long a champion of the music of Olivier Messiaen, van Sice has performed on numerous occasions as a soloist alongside the composer's wife, pianist Yvonne Loriod.
Van Sice is also one of the world's most respected percussion teachers. His former students play in symphony orchestras, contemporary chamber ensembles, and maintain solo careers in more than twenty countries. His students have won prizes the world over in both chamber music and solo competitions. In 1997, he was appointed director of percussion studies at the Yale University School of Music. He subsequently joined the faculties of the Peabody Institute of The Johns Hopkins University and the Curtis Institute of Music. From 1988 to 1997, he headed Europe's first diploma program for solo marimbists at the Rotterdam Conservatory in the Netherlands. Vn Sice has given over 400 master classes in 25 countries, including the Royal College of Music in London, Amsterdam Conservatory, Vienna State Music Academy, The Juilliard School, Eastman School of Music, and Oberlin College. He often serves on juries of international competitions and has released six CDs on the Etcetera, Mode and New World labels. For the last 15 years, van Sice has collaborated with the Adams Corporation in the Netherlands in the design of a series of marimbas bearing his name.