I think you could do a"mix cd"...
Example: Start with Musics that makes people excited and then go changing the musics till you get romantic/calm ones...
But it depends in what the girl likes: Another example: if she didn't like Western, so forget it to add on the CD (even if it's calm/romantic)
Another thing: For you taking a time, thinking in her and than making a gift, she will be very happy for that too... So are 2 points: that you take a time thinking on her AND that you made the gift