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)

Duo de la Molinara, from the opera L'amor Contrastato (1788) by Giovanni Paisiello (9 May 1740 5 June 1816).

Guitar Duet. Early Intermediate to Intermediate.

Pages: Four (4) pages (2 pages both guitars, 1 page guitar I, 1 page guitar II),1:10' min.