SHENG VS SUONA — ORIGINAL COMPARISON AND LISTENING WORKSHEET

SHENG AND SUONA — STRUCTURE RECORD
Instrument name and the source that identifies it:
Traditional or keyed model; what is actually visible:
Mouthpiece, reed position, body and end opening:
One double reed, or separate free reeds in pipes:
Finger holes or keys; what the description says they select:
Which parts are hidden in this photograph:
Do not infer exact range or pipe count from a distant image.

LISTENING RECORD — OBSERVATION BEFORE IDENTIFICATION
Recording title, performer/ensemble and source:
Instrument caption and time in the recording:
Is one performer isolated or is this an ensemble texture:
One line, several notes together, attack and sustain:
Visible playing motion that supports the identification:
What could another player, microphone or effect explain:
One next check; leave uncertain identity unresolved:

DIAGRAM NOTES
Sheng: outward/inward sounding; common wind chamber; selected reed-pipes.
Suona: double reed; bocal; slightly conical body; end bell.
Concept paths are not measured airflow or playing instructions.

ANSWERED CHECKS

1. A labeled sheng plays only one melodic line in the passage. Does that rule out a sheng?
No. The sheng can play a melody as well as combined notes.
A musical passage need not use every capability of the instrument. Use the identified pipe-and-reed arrangement rather than requiring a chord in every phrase.

2. A suona has a metal bell. Is that enough to classify its sound source as lip vibration?
No. The suona uses a double reed.
The material and shape of the end bell do not tell you what initiates vibration. Check the reed at the top or a reliable instrument description.

3. A sheng player draws breath inward while sounding. Is this necessarily the same method as a suona player maintaining a phrase with circular breathing?
No. They are different explanations of sound and breath management.
The sheng can sound with outward or inward breath. Circular breathing on suona maintains the outward sounding phrase while air is replenished; an unbroken phrase alone does not identify the mechanism.

4. One sheng has keys and another has exposed finger holes. Does that mean one must have a suona-type double reed?
No. A keyed interface does not change the sheng into a double-reed suona.
Keys and fingers are alternative note-selection interfaces on different models. Read the reed and body description separately from the presence of keys.

5. You hear a chord while a suona player appears in a full-orchestra shot. Can you attribute every pitch to that performer?
No. The recording may combine several sounding players.
Record the chord as an audible texture, then check a solo view, score or clear source identification before assigning all its notes to one instrument.

6. An unclear picture seems to show 17 pipes. Does this establish the instrument's exact range or exclude other sheng models?
No. Pipe counts and models vary, and the picture may be incomplete.
A familiar pipe-count description is not a universal range chart. Use a model-specific source; do not convert a partly hidden photograph into an exact musical specification.

Sources:
https://www.britannica.com/art/sheng-musical-instrument
https://timbreandorchestration.org/instruments/ensembles/chinese-orchestra/wind-instruments
https://www.hkco.org/en/Instrument-Rd/Chinese-Instruments/Wind-Instruments.html