similar events:

may21, wien/Austria:
monday improvisers session
may25, graz/Austria:
improcon 2018 - day 1
may26, graz/Austria:
improcon 2018 - day 2
sat. may 20 2017
echoraum
wien/Austria

piano festival 1 + 1 = 13,5 day 3
josef novotny, katharina klement: piano solo improvisations
mathilde horsiangou, florian mueller play georg friedrich haas

link: http://www.echoraum.at