Well-known classical music arrangements:

Ave Maria - Schubert
Air on a G String - Bach
Barcarolle "Les Contes D'Hoffmann" - Offenbach
Bridal Chorus - Wagner
Canon in D - Pachelbel
Jesu, Joy of Man's Desiring - Bach
Ode to Joy - Beethoven
Pavane - Faure
Trois Menuets - Bach
Trumpet Voluntary - Clarke
Wedding March - Mendelssohn

Classical, Spanish and Latin American guitar music:

Adelita - Tarrega
Andante in C Major - Giuliani
Barcarolle - Coste
Bolero - Calatayud
Cancion de Cuna - Calatayud
Capricho Arabe - Tarrega
Caramba! - Calatayud
Choros No.1 - Villa-Lobos
Danza de las Hachas - Sanz
Danza de los Nayades - Ferrer
Danza Espanola - Granados
El Majo - Calatayud
Estudio No.1 - Tarrega
Estudios 2, 6 and 7 - Sor
Fandanguillo - Calatayud
Lamento Gitano - Calatayud
Las Hermanas - Anonymous
Mazurka - Calatayud
Mi Favorita - Anonymous
Milonga - Traditional
Recuerdos de la Alhambra - Tarrega
Romanza - Calatayud
Pasodoblillo - Calatayud
Pavane - Milan
Prelude No.2 - Villa-Lobos
Spanish Romance - Anonymous
Tango - Ferrer
Tango en Skai - Dyens
The Harmonious Blacksmith Variations - Giuliani
Vals - Ferrer
Valse - Aguado
Valse - Tarrega
Venezuelan Waltzes - Lauro

Christmas music arrangements:

All I Want for Christmas is You
Away in a Manger
Ding Dong Merrily on High
God Rest You Merry Gentlemen
Good King Wenceslas
Hark, the Herald Angels Sing
I Saw Three Ships
Joy to the World
O Come, All Ye Faithful
Once in Royal David's City
Silent Night
The First Nowell
Wassail Song
We Three Kings of Orient Are
What Child is This?
While Shepherds Watched Their Flocks
Winter Wonderland

Pop and jazz arrangements:

Ain't Misbehavin'
All My Loving
All You Need Is Love
And I Love Her
Can't Buy Me Love
Can't Help Lovin Dat Man
Close to You
Daydream Believer
(Everything I Do) I Do It For You
Fields of Gold
Fly Me to the Moon
From Me To You
Girl From Ipanema
Here, There and Everywhere
Hotel California
If I fell
In My Life
Killing Me Softly With His Song
Let It Be
Long Ago And Far Away
Lovin' You
Norwegian Wood
Ob-La-Di, Ob-La-Da
Octopus's Garden
Ol' Man River
Over The Rainbow
Sentimental Journey
She Loves You
Smoke Gets in Your Eyes
S'Wonderful
Take 5
Tea For Two
The Way You Look Tonight
Tie A Yellow Ribbon
'Till There Was You
Unchained Melody
What a Wonderful World
Wonderful Tonight
You'll Never Walk Alone