Currently Being ModeratedFeb 2, 2013 6:28 PM (in response to Blonic)
Connect your phone to iTunes, go to the Summary tab, check "Sync only checked songs and videos", then go to your music library and check only the songs you want on your phone (uncheck the 4 you don't want), then check Sync Music on the Music tab and click Apply to sync.
Currently Being ModeratedFeb 2, 2013 8:12 PM (in response to randers4)
Thanks Randers. That worked, but will I have to do that for every song I want to delete off my iPhone?
Currently Being ModeratedFeb 2, 2013 8:19 PM (in response to Blonic)
Yes. If it's checked iTunes will sync to your phone. Unchecking a song followed by syncing removes it. If your entire library is checked and you only want certain playlists on your phone, click on any single song, go to Edit>Select All, right-click on the selected songs and choose Uncheck Selection.* Then click on the playlists you want and check just the songs in the playlists.
*You can also select a range of songs by clicking the first one, the shift-clicking the last one. Then right-click and choose Uncheck Selection.