“…He developed this method since the mid-1960s and discussed it through several essays ( Xenakis, 1965 , 1966 , 1967 , 1968 , 1988 , 1990 ) without any reference to the term “gears.” One of his articles provided an important account of several compositional choices around his piece Nomos Alpha (1965–1966) for cello solo that helped several analysts delve into its mathematical features ( Vandenbogaerde, 1968 ; DeLio, 1980 ; Vriend, 1981 ; Solomos, 1997 ; Peck, 2003 ). Other scholars have equally approached his sieves seeking to analyze further pieces within Xenakis’ oeuvre (e.g., Flint, 1993 , 2001 ; Bertocchi, 2001 ; Pace, 2001 ; Squibbs, 2002 , 2003 ; Exarchos, 2007 ; Gibson, 2011 , p. 81–114), to understand the mathematical details of the composer’s approach (e.g., Gibson, 2001 ; Jones, 2001 ; Exarchos, 2009 ), to contextualize the relationships between this approach and others he already developed (e.g., Barthel-Calvet, 2012 ; Hoffmann, 2019 ), to derive computational models (e.g., Agon et al, 2004 ; Ariza, 2005 ), to borrow sieves for their own compositional purposes (e.g., Tipei, 1987 , 1989 ), or as a formal framework for analyzing other repertoires ( Noll et al, 2006 ). To the best of our knowledge, there is only one work providing cognitive remarks upon Xenakis’ sieves, and again in quite general terms ( Besada, 2019 , p. 265–267).…”