prelude
1. [ noun ] something that serves as a preceding event or introduces what follows
Synonyms: overture preliminary
Examples:

"training is a necessary preliminary to employment" "drinks were the overture to dinner"

Related terms: origin
2. [ verb ] serve as a prelude to
Related terms: serve preliminary
3. [ verb ] (music) play as a prelude, of musical pieces
Related terms: play music
4. [ noun ] (music,fine art) music that precedes a fugue or introduces an act in an opera
Related terms: music chorale_prelude
Similar spelling:   prolate
  prelate