What's that classical piece that goes WEEwoo... WEEwoo (Badum-bum), weeWOO,?

.....(dididididietc…)?

It's a famous classical song, all I remember is the epic opening. The Weewoo parts are these loud violins, (High-low, high-low, high-low) the badum-bum is a timpani, and the dididi parts is a flitting flute melody. There are lots of pauses. I have no idea what the name is or who made it, its been killing me.