We have pieces in the following keys for Guitar:
1-20 of 79 Guitar Pieces in A major

Chopin
Prelude in A

Trad.
Ring the Bells

Trad.
Over The River And Through The Woods (Thanksg...

James Scott Skinn..
The Cradle Song

W. D. Hendrickson..
The Spanish Cavalier

Johnny Cash
Worried Man Blues

Carcassi
Etude No 13 Op 60

anon
Wilson's Wilde (The Woods so Wild)

Daft Punk
(featuring Pharrell) Get Lucky - style guitar...

Trad.
Columbia, The Gem of the Ocean

Carcassi
Waltz in A

Trad.
Galatan (Rattvikspolska) efter Pekkos Helmer

Tarrega
Alborada (Capricho)

Aguado
Twelve Waltzes, Op.1 No.1

Tarrega
Preludi- Series 1 no.s 8-14

Carcassi
Etudes Melodiques Progressives Op. 60 No. 3

Trad.
Jemmy's Fancy

Woody Guthrie
Worried Man Blues

Carcassi
Allegretto in A

Trad.
Waiting for Nancy