Track III: 2008 Symphony of all

Track III: 2009 TEDx Amsterdam

Track III: 2012 1000 Voices in Carré

Track III: 2013 Resonance in the Domkerk

Track III: 2015 500 singers at Sensation

Track III: 2016 A school for social impact

Track III: 2011 The voice of Haarlemmermeer

Track III: 2017 Joining forces

Track II: 1985 Greenpeace

Track II: 1990 The study of Nature