Co-owner of the companies MSFH 2010 and Mighty Productions, which run the Mighty Sounds festival (celebrating 20 years in 2025!) and a number of concerts in clubs and halls, especially in Prague. František is the co-founder and vice-chairman of FESTAS, a professional association of music festival organisers. He is a lawyer who helped to advocate the state where regional sanitary stations cannot sanction open-air events.