I missed the same chance when they came by here, at the time I didn't really know who they were.
Jeroen has been a huge influence on my playing for the past several months, re-ignited my interest in fretless, and inspired me to study the 72 tone temperament.
That song is actually my least favorite from their album, but the entire album is fantastic. Check out some of this stuff Ensemble Salazhar too, it's pretty interesting stuff, a lot more mellow.
http://www.jeroenthesseling.com/audio.htm