Suggested below are some themed music programmes for the wedding ceremony.
To see other selections you can review an extensive wedding repertoire.

Celtic Ceremony
Entrance: Breton Bridal March (trad.)
Candle: Ar Eirinn (trad.)
Psalm: The Lord is My Shepherd (trad.)
Alleluia:Celtic Alleluia (trad.)
Candle: An Glaoch (trad.)
Offertory:A Mhuire Mathair (trad.)
Santus: Holy Holy (trad.)
Acclamation: Celtic (trad.)
Peace: Peace Prayer (trad.)
Communion: The Clouds Veil (trad.)
Recessional: Brian Boru's March (trad.)
Classical Ceremony
Entrance: Bridal Chorus (Wagner)
Candle: Gabriel's Oboe (Morricone)
Psalm: Song of Ruth (Eben)
Alleluia:Alleluia (Mozart)
Candle: Air by Handel (Handel.)
Offertory:Ave Maria (Schubert.)
Santus: Sanctus (Handel)
Acclamation: Acclamtion (Handel)
Peace: Pie Jesu (Webber)
Communion: Panis Angelicus (Franck)
Recessional: Ode to Joy (Beethoven)
Irish Ceremony
Entrance: Binneas (Tuite.)
Candle: Inis Oirr (trad.)
Psalm: Se and Tiarna M'Aoire (trad.)
Alleluia:Sinne Alleluia (trad.)
Candle: An Chuilfhionn (trad.)
Offertory:Ag Criost an Siol (O'Riada)
Santus: Is Naofa Thu (Tuite)
Acclamation: A Iosa Fuair tu Bais (Tuite)
Peace: Tabhair dom do Lamh (O'Cathain)
Communion: A Iosa (trad.)
Recessional: Lois na Banriona (Casey)
Christmas Ceremony
Entrance: Trumpet Voluntary (Clarke)
Candle: Bleak Midwinter (Holst)
Psalm: Silent Night (Gruber)
Alleluia:Alleluia (Lawton)
Candle: Nollaig Oiche (trad.)
Offertory:Away in a Manger (Kirkpatrick)
Santus: Holy Holy (Lawton)
Acclamation: O Come Let Us Adore Him (Reading)
Peace: O Tannenbaum (trad.)
Communion: Wexford Carol (trad.)
Recessional: Deck the Halls (trad.)