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Re: How do I separate chords into parts?
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You can use the Explode function for this (under Note Input in Sibelius 7). You'll probably want to create your SATB parts beforehand for the output to go into. As usual it's a bit of a blunt tool so you may need to adjust the results afterwards to get it 'just right'.
Sibelius 6.2, 7.5, Windows 10 laptop