Probably most of you have seen movies where girls have said to their guy " listen, they´re playing our song! " The song is most of the times a song she heard during the first time they met, or the first time they kissed. But most importantly, if she connects a love song to a guy, she´ll get attached to him and whenever she hears this song, she´ll think about him.
So that is the theory for this routine and by using it she will feel comfortable around you.
Here it is:

(cut her off in the middle of a conversation)
Pua: Listen, They are playing our song.
HB: What?
( look her deep into her eyes )
Pua: This is the song that you´ll remember as the first time I really looked into your eyes. The very first time you really noticed my touch.
We will look back at this moment later in life and remember that special connection that we have right here. Right now! This moment will last a lifetime.

Or

Pua: You know how a lot of couples have their own song?
HB: Yeah sure.
Pua: I mean, wouldn´t that be great if you could have a song like that, so whenever your away from that person you could just listen to that song?
HB:I guess.
Pua:I want that! From now on this song ( whatever song is playing ) is our song. Whenever you here this song you will think of me, and I will do the same for you.

Or something like that.

The most important thing is to connect the song to you.
Annother thing thats important is that you have made kino escalation and that you have build some attraction before you do this.

This is not field tested yet. So please try it out and comment this.

fantasic... can also be used to an NLP anchor to the song if built correctly to make her remeber u every time she hear it!

Actually, I have more to add!
This could be used for a really simple call-me-back technique.
If she doesn´t answer on her phone for any reason play the song in the background when your talking to the speaker so that she unconsiously start to think about you.
And to remind her of this all the time so humm this song whenever your close to her or if your approaching her. I think it has potential!

hey love this idea "our song"...I don't know about the call back thing though that seems a little try hard... but hey i'll give it a go