overture

noun
UK /ˈəʊvətjʊə/
US /ˈoʊvərtʃər/

An overture is the music played at the start of a show.

The orchestra played a lively overture before the curtain went up.


OTHER MEANINGS

2. A friendly offer or suggestion made to start a discussion or agreement.

The company made an overture to its rival about working together.

3. The opening part of a longer musical work, such as an opera or suite.

The overture to the opera introduces all the main melodies.

4. An act of approaching someone to begin a relationship or negotiation.

Her smile was an overture of friendship to the new student.