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I've received what are supposed to be music notation files with the extension dds. I'm familiar with mus, xml, sib etc., but have never seen these. The person who wrote them is not with us anymore, and their heirs, which are not musicians, have sent these to me. It's very possible they were written decades ago.

I tried to find mentions of this format in a relevant context, but could not. Does anyone know what program opens them or how to convert them to a modern format or midi so that I can open them in Finale or Sibelius?

  • Look at the files with a text editor like Notepad or hex editor and see if you can find any clues. – piiperi Reinstate Monica Oct 2 at 7:37
  • Google says it's a raster image file - fileinfo.com/extension/dds - if so they might be sheet music of some sort. – Tetsujin Oct 2 at 7:54
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    Try opening them with the freeware DDS Viewer. – PiedPiper Oct 2 at 18:28
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    If you open a file in a text editor, what are the first few characters? And do you see any other readable text anywhere? – Your Uncle Bob Oct 2 at 22:46
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    I'm voting to close this question as off-topic because it was discovered that it is not related to music. – user1803551 Oct 4 at 2:38