Irish traditional music bouzouki players may play single note melody instead of harmonizing accompaniment, but in live acoustic sessions with more than two or three players but it is difficult to produce sufficient volume to be heard over drumming and the piercing sound of fiddles and penny whistles. Although not traditional, the Irish bouzouki has found a home in the modern Irish traditional music scene. The Greek bouzouki was introduced to Irish traditional music in the late 1960s by Johnny Moynihan and then popularised by Dónal Lunny, Andy Irvine, and Alec Finn. Today's Irish bouzouki (usually) has four courses of two strings (usually)
Irish bouzouki octave mandolin are more likely to use mandolin tuning machines and reproduce the details and styling of their American-style carved top mandolins. Some luthiers choose to refer to their clearly bouzouki-style instruments as octave mandolins, or even as mandocellos, despite the GDAD tuning. The octave mandolin is usually regarded as having a shorter scale length than the Irish bouzouki, in the vicinity of 20 to 23 inches (50 to 59 cm), while the scale length of the Irish bouzouki most often ranges from 24 to 25 inches (60 to 65 cm). Some instruments have scales as long as 26 or