In construction, the Irish and Scottish harp may, in general, be considered as one. A characteristic feature is the metal strings. The wires were attached to a massive soundbox typically carved from a single log, commonly of willow, although other woods including alder and poplar have been identified in extant harps. This harp also had a reinforced curved pillar and a substantial neck, flanked with thick brass cheek bands. The strings, usually played with the fingernails, produced a brilliant ringing sound. This type of harp is also unique amongst single row triangular harps in that the first two strings tuned in the middle of the gamut were set to the same pitch.