In this video, starting at 33:06. The one Barbara and The Ogre are dancing to.
Sorry, could not set it to start at the right time. 
Malware site! Don’t click it!
Watched it on Hulu and I have no idea.
Sorry! I use the site all the time and have never had a problem.
It sounds very Russian to me, late 19th century. I know I’ve heard it someplace before.
I thought maybe it was one of the tunes they played on the Titanic, but haven’t been able to identify it so far.
The video, BTW, is this week’s episode of Gotham.
Serenade for Strings in E Major, Op. 22: II. Tempo di valse by Camerata Romana & Eugen Duvier, if I have the scene correct from this site:
That’s it! Thank you! I now know where to go when I have a musical question! 
Turns out the composer is Anton Dvorak:
Here is the complete serenade. The part above is only the second movement:
And by the way, Dvorak was Czech, not Russian.
The last time this question was asked, it was answered in 48 seconds
I think we’re slipping.
Yes, I was aware of that, thank you. I once worked with one of his descendants (great-granddaughter, IIRC) in Czechoslovakia.
Her name was Patricia. I nit you shot.
Hey, it was late on a Friday evening. Cut 'em some slack, Jack! 