The song is you

Para los que quieran hacer dúo con Sinatra, y completando como es costumbre el post anterior:

I hear music when I look at you,
A beautiful theme of ev'ry dream I ever knew.
Down deep in my heart, I hear it play,
I feel it start then melt away.

I hear music when I touch your hand,
A beautiful melody from some enchanted land,
Down deep in my heart, I hear it say
is this the day?

Bridge:

I alone have heard this lovely strain,
I alone have heard this glad refrain,
Must it be forever inside of me
Why can't I let it go?
Why can't I let you know?

Why can't I let you know the song my heart would sing?
That beautiful rhapsody of love and youth and spring,
The music is sweet
the words are true,

The song is you.