[Sherry C]

Hi,

Thanks for your inquiry.

Version 3 is an obsolete release at this point in time. Please see the "Lifetime" page at https://www.notation.com/Lifetime.php which refers to the lifetime of development and support of the different releases of the software. Also, version 3 would not work on Chromebooks as that capability was not developed until the version 4 release.

The current release version is v5, which has a lot of great new features especially related to sound.

You can review "What's New" at our page https://www.notation.com/WhatsNewDetails.php

You can also see a comparison of Composer and Musician features at https://www.notation.com/NotationProductsFeatureComparison.php For details about each feature, just click the "magnifying glass with a + sign" icon.

To purchase a license (or multiples), please see our page at https://www.notation.com/Buy.php

Let us know if you have any further questions or any problems.

ttfn,
Sherry