And of course, the song “Lovers’ Concerto” was in origin a classical piece.
Kixarvexius called the other ‘Morning’ piece that I could not think of correctly – thanks! 
I’d always thought it was “Flight” rather than “Ride” Of The Valkyries. Did a search and had many more hits under “Ride.” Is there a reason so many people have it wrong (flight being incorrect), or is it just a common mistake like people saying “calvary” when they mean “cavalry?”
I’ve never heard it called “Flight of the Valkyries” before. Maybe some people are confused by the famous helicopter scene in Apocalypse Now. The stilted 9/8 rhythm actually sounds like horses galloping to me.
While that piece is nice, the can-can that most people will recognize is actually from Orpheus in the Underworld.
And it’s the piece played by piano soloist Bugs in “Rhapsody Rabbit”.
Makes sense, since that is the scene I immediately think of when I hear that piece.
So many of you know this piece as 'Strangers in Paradise, but how many of you know it is actually the “Polyvetsian dance number 8” by Borodin?
Aren’t the valkyries often depicted as riding flying horses? That’s probably the reason.
Ulyetai na kryilyakh vyetra
tyi vkrai rôdnoi, rôdnaya pyessnya nasha,
tuda, gdye myi tyebya svôbodno pyeli,
gdye byilo tak privol no nam stôboyu.
'Tis my very favorite piece of music. I’ve sung it in performance as a member of my local symphony chorus.
The horses don’t fly. They gallop. I don’t recall if they were winged horses (I don’t believe they were). Nevertheless, the Valkyries were *riding * the horses.
I second the idea that someone is thinking of the scene in Apocalype Now. It could also be a mix-up with Rimsky-Korsikov’s Flight of the Bumblebee. This very familiar piece was the theme to the radio show, The Green Hornet (?), back in the day.
There’s a website that lists classical pieces used in movies that might also ring some bells for you. The site uses frames (arrrrgghhh!) so click ‘Home’ next to the alphabetical links to get to the home page if you don’t get both frames via this link.
Really? I always thought the chorus was taken from a piece by Brahms, but I’m blanking on which one now. Are you sure about the Beethoven? I did notice when I heard it that the theme was a bit of classical music I’d heard before, it’s just that I really thought Brahms.
Back to the thread: Rimsky-Korsakov’s “Flight of the Bumblebee” is used a lot to show someone in a hurry, but not many recognize it by name. (I now notice that Cinnamon Girl mentions it in passing, but I’m not familiar with Apocalypse Now, so I can’t comment on that front.)
Also “Sabre Dance” (who composed that?)
As far as classical music is concerned, “song” is essentially a genre- so despite the solo sections in Beethoven’s 9th or the title of Mendelssohn’s piece, neither of them are songs. I know it may seem like a minor issue, but there you go.
My own habit of referring to everything as “songs” was successfully beaten out of me in college. Some of my profs would take off points for calling instrumental or choral pieces “songs” - so I learned to adapt pretty quick 
**Sattua ** is correct. It’s from Beethoven’s Pathetique Sonata. I’ve got Billy Joel’s An Innocent Man LP somewhere in a dusty attic, and I remember BJ giving Beethoven proper credit.
Aram Khachaturian
If you’ve ever watched The Smurfs, you would immediately recognize the music once I put on Mussorgsky’s Pictures at an Exhibition.
I’ve not seen the Smurfs, but I do know Mussorgsky. Which piece is it? I’m guessing Promenade