Irish bouzouki when having a longer scale length. The fifth course is usually either a lowest bass course tuned to C2 or D2 on an instrument with a long scale, or a highest treble course tuned to G4 or A4 on a shorter scale. Luthier Stefan Sobell, who coined the term "cittern" for his modern, mandolin-based instruments, originally used the term for short scale instruments irrespective of the number of their strings, but he now applies "cittern" to all 5 course instruments irrespective of scale length, and "octave mandolin" to all 4 course instruments, leaving out bouzouki entirely. Mandolin-family luthiers producing an
Irish bouzouki was introduced into Irish traditional music in the mid-1960s by Johnny Moynihan of the popular folk group Sweeney's Men. During the recording of their 1968 eponymous album, "Sweeney's Men", Andy Irvine also played Moynihan's bouzouki on the track "Johnston". Shortly after he returned from Eastern Europe in late 1969, Irvine met Dónal Lunny – who had been playing guitar up to that point – and gave him a Greek bouzouki he had brought back from his travels. Being left-handed, Lunny reversed the strings and critically, replaced the octave strings with unison strings, thus fundamentally changing the character of the instrument.