I've used this app on my MacBook Pro for years, but today it says: 'The application "Amazon Music" can't be opened.'

The error message "The application Amazon Music can't be opened" can occur for a few reasons. Here are some things you can try to fix the problem:

• Quit and reopen the app. Sometimes a simple restart can fix the problem.
• Restart your Mac. This will often clear up any temporary glitches that might be causing the problem.
• Check for updates to the app and macOS. Make sure that you have the latest version of both the Amazon Music app and macOS. You can check for updates by going to the App Store and clicking on the Updates tab.
• Reinstall the app. If the problem persists, you can try reinstalling the Amazon Music app. To do this, open Finder and go to Applications. Drag the Amazon Music app to the Trash. Then, go to the App Store and download the app again.
• Run a diagnostic test. If you are still having problems, you can run a diagnostic test on your Mac. This will help to identify any underlying problems that might be causing the issue. To run a diagnostic test, go to the Apple menu and select About This Mac. Then, click on the System Report button. In the System Report window, click on the Hardware tab and then click on the Apple Diagnostics button.

If you have tried all of these things and you are still having problems, you can contact Amazon Music customer support for help.

Here are some additional things you can try:

• Make sure that you have enough free disk space. The Amazon Music app requires at least 100 MB of free disk space.
• Close any other apps that you are not using. This will free up system resources and may help to fix the problem.
• Try opening the Amazon Music app in a different user account. This can help to rule out a problem with your user account.

I hope this helps!