Ockenghem = Ockeghem
This is the last piece of Canti C, and a Puzzle Canon. Original is here.
This is same as "Chansonnier de Copenhage" No.33 "Prenez sur moi vostre exemple amoureux".
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 Last two S-like signs mean the end points of two resolutions.
 First S-like sign means the starting point of resolutions.
 
Sharps and Flats mean three clefs.
* First flat --> Bass clef
* Second double flat and first sharp --> This double flat means "this sign dousn't include in first clef". So this flat means B flat. First sharp is "natural" sign. These signs mean Soprano clef.
* Second and third Sharps -->The Second is the "natural" sign for double flat. The third Sharp means Fis note. So these two signs mean Tenor clef. But realy second resolution uses Alto clef. Why????