Pichler was the unquestioned musical leader of the ensemble. Rehearsals under him could be notoriously intense. His temper was famous, and former students and colleagues can tell endless stories of explosive interruptions over articulation, intonation, ensemble timing, or simply a phrase that, in his view, lacked character. What made these moments memorable, however, was not merely the severity but the speed with which they passed. The outburst would come, everyone would survive it, and shortly afterward Pichler would return to being warm, funny, self-deprecating, and often unexpectedly gentle. Beneath the demanding exterior there was little vanity. He cared deeply about the music and expected others to care equally.
In later years his influence as a teacher became at least as important as his performing career. From 1993 until 2012 he taught at the Hochschule für Musik und Tanz in Cologne, where he helped shape an extraordinary number of young ensembles. The list of quartets connected to his teaching reads almost like a survey of contemporary chamber music life: the Artemis Quartet, Belcea Quartet, Cuarteto Casals, Schumann Quartet, Aron Quartet and many others all benefited from his guidance, directly or indirectly. Many of these ensembles went on to win the most important international competitions, including Geneva, Bordeaux, Reggio Emilia, Banff, Osaka, London and the ARD Competition, carrying Pichler’s influence onto the world’s leading concert stages. His approach emphasized listening, structural clarity, rhythmic discipline and absolute commitment to the musical text, though never in a dry or academic sense.