Kou Xian (Ho Ho) Set of 4

Set of 4 Kou Xian Jaw Harps

This set comprises four brass jaw harps, each tuned to its own fundamental pitch, allowing you to explore a range of tonal centers without switching instruments. The Kou Xian belongs to the family of lip-vibrated idiophones — instruments struck not against the teeth, as with many jaw harps, but against the lips, a technique that permits smoother transitions between notes and a different harmonic palette than tooth-struck variants.

Sound and Playing Range

Each lamella (the vibrating tongue of the instrument) produces a keynote, from which you can access multiple overtones by adjusting breath pressure and mouth cavity shape. The set's four instruments together create a broad harmonic landscape: you might sustain a low fundamental on one jaw harp while articulating faster passages on another, or layer overtones across all four for dense, shimmering textures. The "free tuning" specification means the instruments are not calibrated to concert pitch or any standardized interval system, but rather each jaw harp settles into its own natural resonance.

Construction and Materials

All four instruments are made from brass, a material that produces a bright, sustained tone and resists corrosion with minimal maintenance. The traditional handmade construction means slight variations between individual jaw harps are expected and contribute to the set's tonal variety rather than detracting from it.

Playing Technique

You hold a jaw harp between your lips (not clenched between the teeth) and pluck the lamella with your finger or fingernail to set it vibrating. Breath control shapes the overtone series: gentle, sustained breathing emphasizes lower harmonics, while sharper breath pulses and changes in mouth shape bring higher partials into prominence. The lip-strike method allows for legato transitions between pitches and a more vocal, vocal-like quality than the tooth-struck approach.

Cultural Context

The Kou Xian is a traditional instrument of the Yi people from Yunnan Province in southwestern China. Within that tradition, complex melodic patterns and ensemble playing are documented practices. For contemporary musicians, the set functions equally as a tool for exploring non-Western tuning systems, layering overtones in experimental composition, or simply discovering the expressive range hidden within a single, ancient design.

What's Included

• Four brass Kou Xian jaw harps, each with its own tuning
• Protective case
• Playing instructions

Getting Started

The included instructions guide you through basic holding position, breath technique, and how to access overtones on each instrument. Because the jaw harps are not tuned to a fixed standard pitch, there is no "wrong" pitch to aim for — your ear will quickly adapt to each instrument's natural center and harmonic series. Many players spend initial sessions simply exploring how much tonal variety emerges from a single jaw harp before moving on to combining multiple instruments.

The jaw harp remains one of the oldest and most widely distributed instrument types across human cultures, played in traditions from Central Asia to the Pacific, and continues to attract musicians seeking direct control over overtone manipulation and acoustic intimacy.