<p><em>Tria ex uno</em> for 6 Instruments refers to a movement by Josquin Desprez (« Agnus Dei II. » from the <em>Missa L'homme armé super voces musicales</em>). In three steps (arrangement – commenting instrumentation – freely associative new composition), Haas draws parallels between his musical idiom and the compositional techniques of Josquin. The première of this Munich Biennale commission: 6 March 2002, Munich (Ensemble TrioLog).</p>