Bouzouki heavy mother-of-pearl ornamentation often seen on modern bouzoukia is typical of bouzoukia of the period. It has tuners for eight strings, but has only six strings, the neck being too narrow for eight. The luthiers of the time often used sets of four tuners on trichordo instruments, as these were more easily available, being also used on mandolins. This type of bouzouki has 8 metal strings, which are arranged in 4 pairs, known as courses, typically tuned CC–FF–AA–DD (i.e., one whole step below the four high strings of a guitar). In the two higher-pitched (treble) courses, the two strings of
Irish bouzouki and a flat back with straight sides replaced the round, stave-built back of the Greek bouzouki. English builder Peter Abnett, who was the first instrument-maker to build a uniquely "Irish" bouzouki – for Dónal Lunny in 1970 – developed a hybrid design with a 3-piece partially staved back and straight sides. All of the initial Irish bouzoukis had flat tops, but within a few years a few luthiers such as Stefan Sobell began experimenting with carved, arched tops, taking their cue from American archtop guitars and mandolins. Even so, today the overwhelming majority of builders continue to opt for flat