KSG Exaudio - publisher of my recordings, compositions and arrangements

Hubert Käppel - my friend and partner with KSG Exaudio

Kölner Klassik Ensembles - my chamber music ensemble

TonArt+Concept - my management Sabine Knappstein

Luciano Marziali - my friend and guitar duo partner

Antonius Müller - German guitar maker who's guitars I play

Koblenz Guitar Festival - Europe's biggest festival for classical guitar

Koblenz Guitar Academy - my friend's and former teacher's academy

Heinz Kassung - web gallery with my fathers paintings

Christian Kassung - my brother's website at the faculty of cultural studies at the Humboldt University Berlin