RT Journal Article SR Electronic A1 Ford, Mike T1 Processes of spectralization: From Josquin's Missa "L'homme armé" Super Voces Musicales to Haas's Tria ex Uno JF Musicologica Olomucensia YR 2015 VO 22 IS 2 SP 7 OP 23 DO 10.5507/mo.2015.010 UL https://musicologica.upol.cz/artkey/mus-201502-0001.php AB This article sheds new light on Georg Friedrich Haas's borrowing methods through an analysis of Tria ex Uno, which paraphrases a piece published half a millennium earlier: the Agnus Dei II from Josquin des Prez's Missa "L'homme armé" super voces musicales, which employs borrowing techniques itself. I demonstrate the transformation from the Agnus Dei II to Tria ex Uno by revealing Haas's specific spectral paradigms and techniques within a framework of Peter Burkholder's and Richard Beaudoin's work on musical borrowing. My study thus provides a means to understand the spectral treatment of existing music within the discourse on musical borrowing.