as a composer:
Boosey & Hawkes Bote & Bock GmbH & Co. KG
Lützowufer 26, 
D-10787 Berlin, Germany
Mr. Frank Harders-Wuthenow
phone +49 (0)30 2500 1323
fax +49 (0)30 2500 1399
frank.harders[at]boosey.com
as a trombonist:
Karsten Witt Musik Management GmbH
Leuschnerdamm 13
D-10999 Berlin
Ms. Caroline Scholz
phone +49 30 214 594-0
fax +49 30 214 594-101
cs[at]karstenwitt.com
www.karstenwitt.com
Mike Svoboda / Mike Svoboda Ensemble
Saint-Louis-Strasse 8
CH - 4056 Basel, Switzerland
mikesvoboda[at]mac.com