+**E9** tuning is a standard [Pedal Steel Guitar](/wiki/Pedal_Steel_Guitar) tuning, known for its bright, versatile sound. It forms a foundation for country music and allows for complex melodic and harmonic expressions through foot pedals and knee levers, making it a cornerstone [Tuning](/wiki/Tuning) in modern string instrumentation.
+## See also
+- [Guitar](/wiki/Guitar)
+- [Country Music](/wiki/Country_Music)
+- [Chord](/wiki/Chord)
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