Trumpet Voluntary - Clarke
Prince of Denmark's march - Clarke
Allemande - G Minor Suite - Pachelbel
Spring - The four seasons - Vivaldi
Apotheosis - Sleeping Beauty - Tchaikovsky
Music for a royal occasion - March - Handel
Air and Bourree - Water Music - Handel
Wedding March - A Midsummer Night's Dream - Mendelssohn
Wedding March - The Marriage of Figaro - Mozart
Wedding March - Bridal chorus AKA Here comes the Bride - Lohengrin - Wagner
Fanfare - Te Deum - Charpentier
St. Anthony Chorale - Haydn
Coronation March - Crown Imperial - Walton
Intrada - Sibelius
These are traditional and classical songs you can use.
Can you name any more in the comments below?