finale 2008

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    Install OSX 10.9.5 on ext. hard drive to run Finale 2008?

    I have a late 2013 MacBook Pro, currently running OS 10.9.5, with a 2 T external hard drive that I use for Time machine backups. I'm looking at upgrading to High Sierra, but want to continue using Finale 2008, for which 10.9.5 is the latest OS that will work. Can I install 10.9.5 and Finale 2008...