Though you can choose any music from this website for your ceremony, these songs are the most popular music choices for a traditional wedding ceremony. A 'Meditation' song is common for a Sand Pouring/Candle Lighting/Ring Passing/Knot Tying -- or anytime during the ceremony where incidental music works.
Trumpet Voluntary - Clarke
Recessional - Mendelssohn
Marry Me - Train
Canon - Pachelbel
Bridal Chorus - Wagner
Jesu, Joy of Man's Desiring - JS Bach
I Can't Help Falling in Love - Elvis
Romanza - Anon
All You Need is Love - Unknown Artist
Choose a Bridal Processional:
Choose a Recessional:
Prelude/Bridal Party/ Meditation
Claire de Lune - Debussy
Autumn - Kindgren

Music Selection Form
Gavotte #1 - Bach/Davis
La Volta - Trad/Davis
Simple Gifts - Traditional
Ode to Joy - Beethoven
Minuet #1 - Bach
Samples are organized in their most common category, though the music in the Prelude/Bridal Party/Meditation category can, and often are used for processionals and recessionals.
Normally the couple picks a style of music for the prelude, then chooses a Pre-processional, Bridal March, and a Recessional - and sometimes a meditaion song if applicable. You can request specific songs during the prelude/postlude if you like.
Annie's Song - John Denver
Here Comes the Sun - The Beatles
The Harmonious Blacksmith - Handel
Romanza De las Montanas - James Davis
Prelude #4 - James Davis
Prelude #2 - James Davis
Prelude #3 - James Davis