Alla turca theme (popularly known as the "Turkish Rondo" or "Turkish March") from the last movement of the Piano Sonata No. 11 in A major, K. 331 / 300i, (1783)  by Wolfgang Amadeus Mozart (27 January 1756 - 5 December 1791).

Guitar Duet. Intermediate to advanced intermediate.

Pages: Four (4) pages (2 pages both guitars, 1 page guitar I, 1 page guitar II).

Il Fuggitivo from op. 8-3 by Joseph Joachim Raff (May 1822 - June 1882).

For Guitar Duet (Classical or Acoustic fingerstyle).

With finger position suggestions. 
Early intermediate, 0:55' min.
Pages : 4 pages (Both Guitars 2pages, I Guitar 1 page, II Guitar 1 page)

The pleasure of love, is a classical French love song written in 1784 by Jean-Paul-Egide Martini (17411816).
Here is an arrangement for Guitar duet.
With downloadable mp3 for audio-help, 2:10 min. With standard notation and tablature.
Eight pages (4 pages both guitars, 2 pages 1st guitar part, 2 pages 2nd guitar part).
1st guitar (solo) intermediate, 2nd guitar easy.

Take Me Home Country Roads, is a song written by Bill Danoff, Taffy Nivert and John Denver.
The song became one of John Denver's most popular and beloved songs.

Here is a version for Guitar duet and voice, with tablature, with melody line and lyrics, guitar chords.
Both guitars 9 pages, I guitar  5 pages, II guitar 6 pages, total 20 pages. Early intermediate to Intermediate.

Six short agreeable duets for classical guitar by Fernando Sor, with tablature. Early intermediate with short memorable phrases, 40 pages, with downloadable mp3 for audio help.

• Duet No1  2 pages both guitars, 1 page each guitar, 1:20' min

• Duet No2  3 pages both guitars, 2 page each guitar, 1:40' min.

• Duet No3  4 pages both guitars, 2 page each guitar,  2' min.

• Duet No4  3 pages both guitars, 2 page each guitar, 1:30' min.

• Duet No5  3 pages both guitars, 2 page each guitar,  2' min.

• Duet No6  3 pages both guitars, 2 page each guitar, 1:45' min.