My itunes won't open on my pc computer?

So i tried to open my itunes and it wouldn't open. So i plugged in my iphone to see if it would automatically open. It didn't.
i DO NOT want to re-install it because i have done that before and i lose All my music, and i don't have any of it saved. So is there any other way to fix this?

Added (1). Oh, i don't have icloud and i don't want to download any other music programs

Install limewire

If you are registered with iCloud then you can easily get back all of your music even if you've deleted it off your PC. If you aren't registered with iCloud, sign up and then re-install iTunes.

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