Americas

1. Duo Amaral - Mexico/Israel (2 gtr)
2. Sérgio and Odair Assad - Brazil (2 gtr)
3. Barbary Coast Guitar Duo - Philipines/USA (2 gtr)
4. Beijing Guitar Duo - China (2 gtr)
5. Guitar Duo Bocaccio-Gallino - Argentina (2 gtr)
6. Castellani-Andriaccio Duo - USA (2 gtr)
7. Duo Catanza - USA (2 gtr)
8. Cote Nord - Mexico City, Mexico (2 gtr)
9. Davis Guitar Duo - USA (2 gtr, mandolin)
10. Davisson Duo - USA (2 gtr)
11. Delphinus Duo - Canada (gtr,flute)
12. Dúo al Sur - Argentina (bandoneón, gtr)
13. Los Hermanos Devia - Colombia (2 gtr)
14. Duo 46 - USA - (violin,gtr)
15. Ferla-Marcinizyn Duo - USA (2 gtr)
16. Duo Firenze - Radford, Virginia, USA (fortepiano, authentic 19thc. gtr, 10str-gtr)
17. Duo "Fortuna" - Mexico (2 gtr)
18. Duo Gimeno-Barrera - Uruguay-México (2 gtr)
19. Goldspiel-Provost Guitar Duo - USA (2 gtr)
20. Jamie Williams Grossman and Andrew Lafreniere -USA ( 2 gtr)
21. Hanser-MCClellan Duo - USA (2 gtr)
22. Hearn-Plato Duo - USA (2gtr)
23. Hollywood Guitar Duo - USA/Japan (2 gtr)
24. Eli & Ann Kassner - Canada (2 gtr)
25. La Vita -Williams Guitar Duo - USA (2 gtr)
26. Duo Madiedo - Prez Puentes - Cuba (2 gtr) active for 10 years - various discs recorded.
27. Mana -México (2 rqt, 1 gtr)
28. Manhattan Guitar Duo -USA (2 gtr)
29. Duo Montagnard - USA (saxophone, gtr)
30. Montes-Kircher Duo - Venezuela-Germany (2 gtr)
31. Musette Duo - San Antonio, Texas, USA (flute, gtr)
32. Newman & Oltman Guitar Duo - USA (2 gtr)
33. Nylon Wound - USA (2 gtr)
34. Odeum Guitar Duo - USA (2 gtr - constructed by Miguel Rodriguez of Cordoba)
35. Rucco James Duo - USA (2 gtr)
36. Santa Cruz Guitar Duo - USA (2 gtr)
37. Sheu Pettit Guitar Duo - USA (2gtr)
38. Duo Siqueira Lima - Brazil (2 gtr)
39. Duo Transatlantique - USA/France (2 gtr)
40. los Voceros de Cristo - Colombia (1 rqt, 2gtr)
41. James and Mary Wirth -  USA (gtr, flute )

Asia

1. Duo Amaral - Israel/Mexico (2 gtr)
2. Beijing Guitar Duo - China (2 gtr)
3. Eurasia Guitar Duo - Vietnam/Spain (2 gtr)
4. Hanoi Guitar Duo - Vietnam (2 gtr)
5. Hong Kong Guitar Duo - Hong Kong, China (2 gtr)
6. Ishida Guitar Duo - Japan (2 gtr)
7. Guitar Duo Lee Song-Ou & Oliver Fartach-Naini - South-Korea/Germany (2 gtr)
8. Miyabi Duo - Japan/UK (2 gtr)
9. Muse-Art Guitar Duo - Japan (2 gtr)
10. Nagoya - Korea (2 gtr)
11. Santur Guitar Duo - Iran, Europe (santur, gtr)
12. Duo Zaher - Irán (2gtr)

Australasia

1. Australian Guitar Duo - Australia (2 gtr)
2. Duo Agostino - Australia (2 gtr)
3. Duo Lenz - Australia - (2 gtr + baroque gtr + vihuela)
4. Duo Romantica - Australia (Darwin) (2 gtr, 1 terz)

Europe

1. Agnew McAllister Duo - UK (flute, gtr)
2. All Strung Out - UK (2 gtr)
3. Amadeus Guitar Duo - Canada (2 gtr)
4. Anido - Holland (2 gtr)
5. Arada Guitar Duo - UK (2 gtr)
6. Balanza - Germany (gtr,lute)
7. Bleasdale-Heywood Guitar Duo - UK (2 gtr)
8. Bulatovic-Nikcevic Guitar Duo - Montenegro (2 gtr)
9. Carreiro Williams - Portugal (2gtr)
10. Cavatina Duo - Spain/Bosnia (flute, gtr)
11. Christodimou-Petridis - Greece (2 gtr)
12. Claudio Maccari - Paulo Pugiese Guitar Duo - Italy (2 gtr)
13. Duo Compostella-Balsimini -Italy (clarinet, gtr)
14. Copenhagen Guitar Duo - Denmark (2 gtr)
15. Duos Cristal - Germany (flute, gtr - also some Asian temple instruments)
16. Croatian Chamber Duo - Hrvatska (Croatia) (violin, gtr)
17. Czech Guitar Duo - Czech R. (2 gtr)
18. Duo Françaix - France (2gtr)
19. Den Danske Guitarduo - Denmark (2 gtr)
20. Davies-Graudina Duo - UK/Latvia (gtr,violin)
21. Dodici Corde UK (2 gtr)
22. Duo Guitartes - Germany (2 gtr)
23. Duolisme - (2 gtr)
24. Duophon - Norway (2 gtr)
25. Eden-Stell Duo - UK (2 gtr)
26. Éire Guitar Duo - Eire (2 gtr)
27. Eurasia Guitar Duo - Spain/Vietnam (2 gtr)
28. Duo Frevo - Norway (2 gtr)
29. The Gothenburg Combo - Sweden (2 gtr)
30. Granados Guitar Duo - Germany/Japan (2 gtr)
31. Grees-Kläger Guitar Duo - Germany (2 gtr)
32. Gröningen Guitar Duo - Holland (2 gtr)
33. Duo Guitardando - Germany (2 gtr)
34. Duo Gvito - Norway (2 gtr)
35. Hill /Wiltschinsky Guitar Duo - UK (2 gtr)
36. Ito-Dorigny Guitar Duo - France (2 gtr)
37. Kaiser Schmidt Guitar Duo - Germany (2gtr)
38. Katona Twins - Hungary (2 gtr)
39. Duo Kitharsis - romania (2 gtr)
40. Kupinski Duo - Poland (2 gtr)
41. Duo Klemke - Germany (2gtr)
42. Llobet Guitar Duo -Republic of Ireland (2 gtr)
43. McClelland-Cousté - France (2 gtr, lute)
44. Duo Martin-Régis - France (2 gtr)
45. Melis Guitar Duo - Spain/Greece (2 gtr)
46. MoNo Guitar Duo - Poland/Italy - (2 gtr)
47. Montenegrin Guitar Duo - Montenegro (2 gtr)
48. Montes-Kircher Duo - Germany-Venezuela (2 gtr)
49. Moscow Guitar Duo - Russia (2 gtr)
50. Niehusmann Guitar Duo - Germany (oct/lute/gtr, gtr)
51. Duo Nocturne - UK (2 gtr)
52. Oktober - UK (2 gtr)
53. Duo Orfeo - Germany (2 gtr)
54. Progetto Avanti - Sweden (2 gtr)
55. Roth Guitar Duo - UK (2gtr)
56. Rucco-James Duo - Italy/USA (2 19th century gtr)
57. Scandinavian Guitar Duo - Scandinavia (2 gtr)
58. SoloDuo - Italy (2 gtr)
59. Song-ou and Fartach-Naini Guitar Duo - Germany (2 gtr)
60. Duo Sonare - Germany (2 gtr)
61. Duo Stoyanova - Bulgaria (2 gtr)
62. Duo Together - Poland/England - (2 11 string arch guitars)
63. Well-Tempered Guitar Duo - UK (2 gtr)
64. Duo Transatlantique- France/USA (2 gtr)
65. Zacek-Vit Guitar Duo - Czech R. (2 gtr)
66. Z.o.o.Guitar Duo - Holland (2 gtr)jet