Deleting music

I have clicked on the auto-fill on iTunes when in my iPhone section but then cancelled it part way through as it was done accidental, I have subsequently got loads of songs in a light grey shade that I can not delete in my music library (iPhone).



How do I get them off.



Cheers:)

via iLounge Forums http://forums.ilounge.com/iphone/278214-deleting-music.html