Prelude, seating, processional, recessional, other...

A Thousand Years - Christina Perry 
All Of Me - John Legend
Bridal Chorus - Wagner
Canon In D - Johann Pachelbel
Clocks - Coldplay
Don't Stop Believin' - Journey
Faithfully - Journey
Glasgow Love Theme - from "Love Actually"
God Bless the Broken Road - Rascal Flatts
Marry Me - Train
Somewhere Over the Rainbow - Israel Kamakawiwo’Ole
Wedding March - Felix Mendelssohn
You & I - Stevie Wonder / Michael Buble

Mellow contemporary (cocktail hours, private events, etc.)

Besame Mucho - Diana Krall
Feel Like Makin' Love - Roberta Flack
Fly Me To the Moon - Frank Sinatra
Gee Baby, Ain't I Good To You? - jazz standard
Girl From Ipanema - Antonio Carlos Jobim
I Just Can't Stop Loving You - Michael Jackson
I Just Haven't Met You Yet - Michael Buble
I've Got Rhythm - George Gershwin
I've Got the World On A String - Tony Bennett
If I Ain't Got You - Alicia Keys
Isn't She Lovely? - Stevie Wonder
Killing Me Softly - Roberta Flack
Linus & Lucy (the Charlie Brown Theme) - Vince Guaraldi
Nice N' Easy - jazz standard
Sailing - Christopher Cross
Sway - latin jazz standard
The Way You Make Me Feel - Michael Jackson
Theme From "New York, New York" - Frank Sinatra
Thinking Out Loud - Ed Sheeran
Will You Be There - (from "Free Willy 2")

Funerals, memorials, and worship

10,000 Reasons - Matt Redman
Amazing Grace - traditional hymn
Amazing Grace (My Chains Are Gone) - Chris Tomlin
Be Not Afraid - traditional hymn
Christ In Me Arist - Trevor Thompson
Everlasting God
How Great Thou Art - traditional hymn
I Was There To Hear Your Borning Cry - traditional hymn
Love Never Fails - Catholic contemporary hymn
Mass Of Renewal - Curtis Stephen
On Eagles Wings - traditional hymn
Precious Lord, Take My Hand - African Spiritual
Sacred Silence - Catholic contemporary hymn
Shepherd Me, O' God (Psalm 23) - Marty Haugen
Song Of Farewell
Soon and Very Soon - African Spiritual
You Are - Colton Dixon

Christmas hits

Baby, It's Cold Outside
Blue Christmas
Dance of the Sugarplum Fairy
Deck the Halls
Frosty the Snowman
God Bless Ye Merry, Gentlemen
I'll Be Home For Christmas
Jingle Bell Rock
Jingle Bells
Mr. Santa
Rockin' Around the Christmas Tree
Rudolph the Red Nose Reindeer
Santa Baby
Silent Night
Sleigh Ride
The 12 Days Of Christmas
The Chipmunk Song
The Christmas Song (Chestnuts Roasting on an Open Fire)
We Three Kings
Winter Wonderland
Wonderful Christmastime