Can I uninstall and reinstall iTunes

iTunes is now part of the operating system and cannot be manually uninstalled. To reinstall iTunes, OS X will need to be reinstalled through recovery mode. Reinstalling OS X may not be the appropriate troubleshooting step to take. It seems like iTunes is becoming unresponsive at launch, try testing the issue in a new user account.

How to test an issue in another user account on your Mac - Apple Support

chroot wrote:

"iTunes is now part of the operating system and cannot be manually uninstalled."

That information is partially incorrect. El Capitan will not let you delete iTunes in Finder, but you always have the option to use Terminal.

Re-installing iTunes might not be the solution. In fact, replacing the app itself will not resolve any issues with a broken iTunes library, broken iTunes configuration files or a broken user account.

Before you follow any of the following procedures make sure you have a recent backup.

1. The easiest issue to check is a broken library. Press and hold the OPTION key and start iTunes. A dialog will offer you to create a new library.

2. The next step would be to check for broken configuration files. Delete the following folders and files:

~/Library/iTunes

~/Library/Preferences/com.apple.iTunes.plist

~/Library/Preferences/com.apple.iTunes.eq.plist

~/Library/Preferences/com.apple.iTunesHelper.plist

3. If 1. and 2. didn't help you might want to try and create a new user account in System Preferences -> Users & Groups. Log in with that new user and try to start iTunes.

4. If none of the above worked you could try to replace iTunes with a fresh copy.

- open Terminal and type "sudo rm -rf /Applications/iTunes.app"

- type the password of your current user account, assuming it has administrative privileges

- open Safari and go to "www.apple.com/downloads", find "iTunes" and click on the "Download" button

- install iTunes and reboot your Mac

Does this mean you should try a new iTunes library before deleteing the files in the Library folder?