What is the difference between Brass & Copper?
Brass is a mixture of Copper and Zinc with minute traces of lead. (The Lead content is usually between .05&.07 %) It has a lighter, yellowish color and does not tarnish as darkly as copper does. Copper is softer than Brass. The resulting difference in sound is that Brass usually has a brighter sound while the Copper is more mellow and round. The individual voicing of each whistle can dramatically effect the sound as well so you may not notice the difference when comparing 2 whistles. For the Low D whistles, the Brass is lighter to hold, but the copper seems to have a deeper resonance.