Mauro Giuseppe Sergio Pantaleo Giuliani (27 July 1781 8 May 1829) was an Italian guitarist, cellist, singer, and composer. He was a leading guitar virtuoso of the early 19th century.
This is the second of the set of 16 easy and pleasant duets for flute and guitar composed by Mauro Giulani at 1810.
For Flute and guitar duet.
With downloadable mp3's for audio help (with both the Flute and guitar and one with guitar only for practicing the Flute).  With guitar tablature.
Pages: Six pages (2 pages both Flute and guitar, 1 pages Flute part, 1 page guitar part, 2 pages guitar with guitar tablature part), 3' min.

A selected Cello and Guitar duet by J.Bergmiller (19th century).

With Guitar standard notation and tablature (separate parts with tablature and standard notation). 
With downloadable mp3 for audio help (both Cello and guitar, guitar only. for practicing the Cello).

Total eight pages (4 pages both Cello and guitar, 1 page Cello part, 2 pages guitar with tablature part, 1 page guitar without tablature part), 4:40' min - Early Intermediate.

"Annie's Song" (also known as "Annie's Song (You Fill Up My Senses)") is a folk rock and country song recorded and written by singer-songwriter John Denver.
Here is an arrangement for Guitar duet, Early Intermediate, with standard notation, guitar Chords, Voice line and Tablature. 
7 pages both Guitars and voice, 5 pages Guitar I, 5 pages Guitar II, Total 17 pages, 2:55' min.
Guitar duet, Acoustic Guitar duet, Guitar and voice. Nylon or steel strings.

How Great Thou Art is a Christian hymn based on a Swedish traditional melody and a poem written by Carl Boberg (18591940)  Sweden, in 1885. How Great Thou Art was ranked second (after Amazing Grace) on a list of the favourite hymns of all time in a survey by Christianity Today magazine in 2001.

For Flute and Guitar duet (Guitar in double D tuning (D,A,D,G,B,D)).

With standard notation and tablature.
Easy to early intermediate.

Pages: SIx (6) pages. (3 pages Melody/Flute and Guitar with tab, 1 page Melody/Flute part, 2 pages Guitar and tab part).

Mauro Giuseppe Sergio Pantaleo Giuliani (27 July 1781 8 May 1829) was an Italian guitarist, cellist, singer, and composer. He was a leading guitar virtuoso of the early 19th century.
This is the eighth of the set of 16 easy and pleasant duets for violin and guitar composed by Mauro Giulani at 1810.
For Violin and guitar duet.
With downloadable mp3's for audio help (with both the Violin and guitar and one with guitar only for practicing the Violin).  With guitar tablature.
Pages: Four pages (1 page both Violin and guitar, 1 page Violin part, 1 page guitar part, 1 pages guitar with guitar tablature part), 1:10' min.