- one solo-track, called "L.C.O.", on "Jazztublieft!" (2005 Muziekcentrum Vlaanderen), featuring 'the finest in flemish jazz'...

- piano, composition and arrangements on the original soundtrack of the french movie "J'aime regarder les filles" (2011), a movie by Frédéric Louf. A work done in team with Bo Van der Werf.

- appearance on 3 tracks of bass-player Reggie Washington's record "Freedom" (2012). Gene Lake is on drums and Jeff Lee Johnson on guitar.

- piano and composition on the soundtrack of "SATYAJIT RAY NEGATIVES, My life with Manikda" (2005), a movie by Bo Van der Werf; the original music was played by Jozef Dumoulin, Sébastien Boisseau on double bass and Eric Thielemans on drums. 2 sample-videos can be found in the media-section.

- guest appearance on 'Vertigo' of the belgian rock-band Venus.(Delabel 2003)
- guest appearance on "The Black Napkins" of The Black Napkins (RAT 2009) 
- guest appearance on "Trinity Song" of Jambangle (2002, BRM)
- guest appearance on "Impresiones" of Mark Van Overmeire (2004 Kramusika)

- all pianos and keyboards on "It's Heaven" of Vincent Scarito (2008)

- piano in one of the two rhythm-sections of "IASJ Gala Concert" of the Big Band of the Hochschule from Cologne, featuring Michael Brecker and Dave Liebman (1998, IASJ)

- piano, Fender Rhodes and harmonium on "One Hand", trio-record of bassist Gulli Gudmundsson with Lieven Venken on drums (2003)

- all keyboards on the soundtrack of "Dirty Mind" (2009), a movie by Peter Van Hees; the original music was improvised in quartet with Erwin Vann on tenor saxophone, Michel Hatzigeorgiou on electric bass, and Teun Verbruggen on drums

- Fender Rhodes and keyboards on "Fortunella" by the belgian band 1060 (2009 Piliginga Records)