history
2017
Master Group : New York Voices (US)
2016
Master Group : Vocal Sampling (CU)
2015
Master Group : Naturally 7 (US)
2014
Master Group : The Idea of North (AU)
2013
Master Group : Rajaton (FI)
2012
Master Group : SLIXS (DE)
2011
Master Group : The Real Group (SE)