Example 15. Section C of Éclat. Background structural tone Fsharp2 is a common tone that appears within each figure and the anchor note of a transposition of the sustained chord (sketch material from Mappe G, Dossier 4b,6 (582–564) and Mappe G, Dossier 4a, 1 (582–516)). Pierre Boulez Collection. Paul Sacher Foundation