How to delete songs on iphone? - 1

So iTunes has a new version and when I open it up I click on my iphone and "on this iphone" and there's a list of like 200 songs I have on there and I want to delete them all but I can't.
I can select them all but the delete button doesn't work. How am I supposed to delete them?

You need to un-tick the songs you don't won't on your iPhone and click Sync. The songs that are ticked will remain on your iPhone. This may help as well: http://support.apple.com/.../kb/HT1386