Mechler - Improvisation

Johannes Geffert (organ of St Michael, Bruessler Platz), Wolfgang Bretschneider (organ of St Pankratius, Worringen), Clemens Ganz (organ of Köln Cathedral), Winfried Bönig (organ of St Bonifatius Church), Gerhard Blum (organ of St Kunibert), Thierry Mechler (organ of St Aposteln Church)