13stringed

13stringed is a descriptive term for any stringed instrument that contains thirteen strings. It does not refer to a single standardized model but to a class of instruments across guitar, lute, zither, and other plucked families. The term appears in maker catalogs, reviews, and discussions of extended-range instruments, where players seek a broader tonal palette and range than conventional instruments provide.

Because thirteen strings can be laid out in different ways, there is no universal configuration. A common approach is to arrange strings in six courses of two strings (six pairs) plus an additional single string, which may be tuned to extend the bass or treble register. Other layouts use more singles, or blend courses of two with unpaired strings. Tunings vary by instrument type and performer, with aims such as expanding low-end resonance, enabling new chord shapes, or preserving string tension within a practical scale length. Construction choices—wood type, scale length, and string material—significantly influence tone and feel.

Use of 13stringed instruments is mainly in experimental, contemporary classical, and fusion contexts. They are typically custom-built by luthiers or produced in small batches, reflecting the specialized design and maintenance considerations involved in handling higher string counts and increased tension. While not widespread, 13stringed instruments contribute to extended-range repertoires and sonic exploration within modern music.