Editing Hornbostel–Sachs (section)

===Simple chordophones or [[zither]]s (31)===
Instruments which are in essence simply a string or strings and a string bearer. These instruments may have a resonator box, but removing it should not render the instrument unplayable, though it may result in quite a different sound being produced. They include the [[piano]] therefore, as well as other kinds of [[zither]]s such as the [[Koto (musical instrument)|koto]], and [[musical bow]]s.

====[[Bar zither]]s (311)====
{{main|Bar zither}}
The string bearer is bar-shaped.
* 311.1 [[Musical bow]]s – The string bearer is flexible (and curved)
** 311.11 Idiochord musical bows – The string is cut from the bark of the cane, remaining attached at each end
*** 311.111 Mono-idiochord musical bows – Containing one string only
*** 311.112 Poly-idiochord musical bows or harp-bows – Containing several strings that pass over some type of bridge
** 311.12 Heterochord musical bows – The string is of separate material from the bearer
*** 311.121 Mono-heterochord musical bows – The bow has one heterochord string only
**** 311.121.1 Without resonator
***** 311.121.11 Without tuning noose
***** 311.121.12 With tuning noose
**** 311.121.2 With resonator
***** 311.121.21 With independent resonator
******311.121.211 Without tuning noose
****** 311.121.212 With tuning noose
***** 311.121.22 With resonator attached
****** 311.121.221 Without tuning noose
****** 311.121.222 With tuning noose
*** 311.122 Poly-heterochord musical bows – The bow has several heterochord strings
**** 311.122.1 Without tuning noose
**** 311.122.2 With tuning noose
* 311.2 [[Stick zither]]s – With rigid string carrier
** 311.21 Musical bow/stick – The string carrier has one rigid and one flexible end
***[[List of musical instruments by Hornbostel–Sachs number: 311.211|311.211]] Instrument has one resonator gourd
***[[List of musical instruments by Hornbostel–Sachs number: 311.212|311.212]] Instrument has several resonator gourds
** 311.22 True stick zithers – NB Round sticks which happen to be hollow by chance do not belong on this account to the tube zithers, but are round-bar zithers; however, instruments in which a tubular cavity is employed as a true resonator, like the modern Mexican harpa, are tube zithers
*** [[List of musical instruments by Hornbostel-Sachs number: 311.221|311.221]] With one resonator gourd
*** [[List of musical instruments by Hornbostel-Sachs number: 311.222|311.222]] With several resonator gourds

====Tube zithers (312)====
{{main|Tube zither}}
The string bearer is a vaulted surface.
* 312.1 Whole tube zithers – The string carrier is a complete tube
** 312.11 Idiochord tube zithers
***312.111 Without extra resonator
*** 312.112 With extra resonator
** 312.12 Heterochord tube zithers
*** 312.121 Without extra resonator
*** 312.122 With extra resonator
* 312.2 Half-tube zithers – The strings are stretched along the convex surface of a gutter
** 312.21 Idiochord half-tube zithers
***312.211 Without extra resonator
*** 312.212 With extra resonator
** [[List of musical instruments by Hornbostel–Sachs number: 312.22|312.22]] Heterochord half-tube zithers
***312.221 Without extra resonator
*** 312.222 With extra resonator

====Raft zithers (313)====
{{main|Raft zither}}
The string bearer is composed of canes tied together in the manner of a raft.
* 313.1 Idiochord raft zithers
**313.11 Without extra resonator
**313.12 With extra resonator
* 313.2 Heterochord raft zithers
**313.21 Without extra resonator
**313.22 With extra resonator

====Board zithers (314)====
The string bearer is a board.
* 314.1 True board zithers
** 314.11 Without resonator
** 314.12 With resonator
*** 314.121 With resonator bowl
*** 314.122 With resonator box – the [[piano]] is part of this subdivision
***314.123 With resonator tube
* 314.2 Board zither variations
** 314.21 [[Ground zither]]s
***314.211 Without resonator
*** 314.212 With resonator
**** 314.212.1 With resonator bowl
**** 314.212.2 With resonator box
****314.212.3 With resonator tube
** 314.22 Harp zithers
***314.221 Without resonator
*** 314.222 With resonator
**** 314.222.1 With resonator bowl
**** 314.222.2 With resonator box
****314.222.3 With resonator tube

====[[Trough zither]]s (315)====
{{main|Trough zither}}
The strings are stretched across the mouth of a trough.
* 315.1 Without resonator
* 315.2 With resonator

====[[Frame zither]]s (316)====
{{main|Frame zither}}
The strings are stretched across an open frame.
* 316.1 Without resonator
* 316.2 With resonator