ITunes doubled and tripled my songs and I can't delete them?

I was trying to delete some of my songs on my itunes account to clear out space on my phone, so I unchecked a bunch on my iTunes library on my computer. When I plugged my iPhone into the computer, it doubled and tripled almost all of the songs on my phone, but not actually in my iTunes library. With the new iTunes update it brings you to a whole different list of options for music on your iPhone and its really hard to figure out. I can delete songs in my library, but not in the music on my phone. But like I said, the music in my library is still fine. I really don't know what to do and now there's no space on my phone.

Try syncing your phone with your computer, then on your computer go to the icon of your phone and then at the top click on music and then instead of having the box that says something like sync entire library checked, check the other one then select the artist/albums/songs you want and then click the sync button at the bottom right of the screen and see if that works…