The Way You Look Tonight
"The Way You Look Tonight" was a 20th century song from Earth. 

Vic Fontaine sang this song during the farewell party on Deep Space 9 for Worf, Odo and Miles O'Brien in 2375, who were all leaving the station. ()

Lyrics
Some day, when I'm awfully low,
When the world is cold,
I will feel a glow just thinking of you...
And the way you look tonight.

Yes you're lovely, with your smile so warm
And your cheeks so soft,
There is nothing for me but to love you,
And the way you look tonight.

With each word your tenderness grows,
Tearing my fear apart...
And that laugh that wrinkles your nose,
It touches my foolish heart.

Lovely ... Never, ever change.
Keep that breathless charm.
Won't you please arrange it?
Cause I love you ... Just the way you look tonight.

Mm, Mm, Mm, Mm,
Just the way you look tonight.

Appendices

Background information 
The authors of the  described the song as expressing the emotions of love which were associated with the visual appearance of one's mate. Furthermore, it was stated that Vic Fontaine's performance of this song was the final scene filmed for the series. 

The theme of the song played through the flashback sequences near the end of the episode. 

It was written by Dorothy Fields and Jerome Kern in 1936, originally performed by Fred Astaire. Among the artists who later covered it were Bing Crosby and Frank Sinatra.

External link 
 

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Way You Look Tonight, The