Will reinstalling OS from recovery mode preserve iTunes library? I have a Macbook Pro with a broken OS (computer was turned off during an  update and won’t boot any more).

The Macbook contains some user data that hasn’t been backed up in a while, including a valuable iTunes library.

Will those data be preserved when reinstalling OS X (Yosemite) from recovery mode, or is there an easy way to get hold of it again?
Reinstalling OS X or macOS from Recovery mode or an Installer will not delete any files.