One of the best songs relating to Romeo and Juliet was written by Henry Mancini and actually used in the 1968 Romeo and Juliet film version. It is called "Love Theme" and captures the first act of the play very well. It classifies Romeo by saying that "youth" is "impetuous fire." It also captures the theme of sexual and marital desire in the play through the lines,

Some may think only to marry,
others will tease and tarry,
mine is the very best parry;
Cupid he rules us all.

Perry Como's popular oldie "Round and Round" can also be considered a good match for the second act. Como's song describes finding true love and the desire of marriage. His lyrics contrasting night and day can also be compared with the night and day imagery we see used in Act 2, Scene 2:

In the night you see the oval moon
Going round and round in tune
And the ball of sun in the day
Makes a girl and boy wanna say...

Eric Clapton's "Tears in Heaven" can be a good song representing any of the deaths we see in the play, especially if any of the characters had actually been strong enough to endure the suffering death causes. The speaker asks:

Would you know my name
If I saw you in heaven?
Would it be the same
If I saw you in heaven?

These lines can be translated to mean that the speaker is missing the deceased loved one so much that he/she is contemplating his/her own death. But instead of committing suicide as Romeo and Juliet did, the speaker says that he/she is not ready for heaven yet.