Overture is a piece of orchestral music containing contrasting sections played at the beginning of an opera, oratorio, or other dramatic vocal composition.
Overture, sheet music:
JESUS CHRIST SUPERSTAR. Overture (Andrew Lloyd Webber and Tim Rice)
Egmont, Op.84 (Ludwig van Beethoven)
The Marriage of Figaro, K.492 (Wolfgang Amadeus Mozart)
THE STONE GUEST. Overture (Alexander Dargomyzhsky)
RUSALKA. OVERTURE (Alexander Dargomyzhsky)
A LIFE FOR THE TSAR (IVAN SUSANIN). OVERTURE (Mikhail Glinka)
RUSLAN AND LYUDMILA. OVERTURE (Mikhail Glinka)
PRINCE IGOR. OVERTURE (Alexander Borodin)