 In 1997/1998 Schlee was Composer in Residence of the Vienna Concert Verein.His music was performed by interpreters like Roger Norrington, Riccardo Chailly, Wladimir Fedossejew, Bertrand de Billy, Placido Domingo, Franz Welser-Möst, Pinchas Steinberg, Dennis Russell Davies, Sándor Végh, Manfred Honeck, Ralf Weikert, Leopold Hager, Christian Simonis, Lothar Zagrosek, Heinz Karl Gruber, Zoltán Kocsis, Philippe Herreweghe, Maurice André, Heinrich Schiff, Ursula Holliger, Ildikó Raimondi, Bernarda Fink, Wolfgang Schulz, Walter Auer, Sharon Bezaly, Michael Martin Kofler, Silvia Careddu, Hansjörg Schellenberger, Marie-Luise Modersohn, Andreas Schablas, Milan Turkovic, Michael Schade, Markus Schäfer, Alexander Krichel, Auryn Quartett, Quatuor Danel, Wiener Streichquartett, Klangforum Wien, Ensemble die reihe, Soloists of Sächsische Staatskapelle Dresden and many others.As an organist Thomas Daniel Schlee performed intensely throughout Europe, was soloist at renowned international festivals, recorded for radio and CDs (Diapason d'Or 10 de répertoire, and the German Record Critics' Award.