The list Below is only a sample of the wide variety of music that may be appropriate for your joyous occasion.
I would be happy to work with you to find the music that is right for you.

Air from The Water Music     (Handel)
Air from Suite No.3 in D Major     (Bach)
Adagio For Strings     (Barber)
Allegro from Violin Sonata Op. 1, No.15     (Handel)
Amazing Grace     (Newton)     
Apres En Reve ~After A Dream      (Faure)  
Arioso     (Bach)
Ave Maria adapted by Gounod    (Bach)
Ave Maria     (Schubert)  
Blue Moon     (Rogers & Hart)
Bridal Chorus from Lohengrin     (Wagner) 
Canon in D     (Pachelbel)
Elegy from "The Erynnies"     (Massenet)
Elegy Op. 24     (Faure)
Estralita     (Ponce)
Every Little Thing She Does Is Magic (The Police)
Good Day Sunshine     (Beatles)
In My Life     (Beatles)
Isn't It Romantic     (Miller)
Jesus, Joy Of Man's Desiring     (Bach)
La Rejouissance from The Royal Fireworks     (Handel)
Love Song    (The Cure)
Manhattan Serenade     (Adamson, Alter)
Minuet No.2 in G     (Betthoven)
Minuet from Divertimento in D K334     (Mozart)
Nina     (Pergolese)
Panis Angelicus     (Frank)
Rondeau from Sinfonies de Fanfares     (Mouret)
Rose Room     (Williams, Hickman)
Sheep May Safely Graze from Cantata No.208     (Bach)
Sicilienne     (Faure)
Stairway To The Stars     (Parish, Malneck, Signorelli)
Suite No. 1 in G Major for unaccompanied Cello     (Bach)
Suite No. 3 in C Major for unaccompanied Cello     (Bach)
The Swan from Carnival Of The Animals     (Saint-Saens)
Trumpet Voluntary in D     (Clarke)
Wedding March     (Mendelssohn)