I have the latest iTunes installed on my PC and when i connect my iPhone is recognises it etc. So o create a new playlist in iTunes and add my music to it. Then click the songs tab in the iPhone menu, then select the playlist I want to add. But when i look back at my iPhone it has deleted all my previous music from the phone 
What am I doing wrong?
Thanks,
Dez.

What am I doing wrong?
Thanks,
Dez.