The Irish bouzouki (Irish: búsúcaí) is an adaptation of the Greek bouzouki (Greek: μπουζούκι). The newer Greek tetrachordo bouzouki (4 courses of strings) was introduced into Irish traditional music in the mid-1960s by Johnny Moynihan of the folk group Sweeney's Men, who retuned it from its traditional Greek tuning C³F³A³D⁴ to G²D³A³D⁴, a tuning he had pioneered previously on the mandolin. Alec Finn, first in the Cana Band and subsequently in De Dannan, introduced the first Greek trichordo (3 course) bouzouki into Irish music.
In the early 1970s, Andy Irvine, who was a member of Sweeney's Men with Johnny Moynihan, gave a Greek tetrachordo bouzouki to Dónal Lunny, who replaced the octave strings on the two lower G and D courses with unison strings, thus reinforcing their lower frequencies. Soon after, on a visit with Irvine to the workshop of luthier Peter Abnett, Lunny commissioned a four-course bouzouki with a three-piece, partially staved back. This was the first bouzouki built specifically for Irish music. Since then, the instrument has been adapted by many instrument builders for Irish traditional and other styles of folk music.
