Brannen Brother, founded in 1978, is a leading and famous handmade flute manufacturer in the United States. It adheres to the strictest standards of craftsmanship and acoustic technology for the production of flutes, and is used by renowned players Emmanuel Pahudhe and Alexa Still. Brannen Brother uses the world's top manufacturing technology, the Brögger key system, which effectively reduces friction and interference when the button axis is linked, and achieves a perfect mechanical button linkage experience. It also uses the original Coopa scale, and by changing the position of the sound holes, the original A:440 flute is designed to be a more balanced A:422~445 flute. Brannen Brother manufactures three main series: Brogger Flute, Millennium Flute and Kingma System Flute, and has also launched a high-end customization model to meet the needs of different players. Brannen Brother is a mid-to-high-end flute that is expensive, the most representative is the Kingma System Flute in Silver, a handmade sterling silver flute with a hand-cut Brannen-Cooper mouthpiece and Brannen mechanism, as well as a high-quality Straubinger mat, the keys are flexible and stable, the treble is bright, the bass is mellow, and it is suitable for professional playing, and it costs $22,780.