Check the listing for details. First Note Hum-A-Zoo. Condition: New. Listed at 1.55 USD. A relative of the kazoo, our 1st Note™ Hum-az-oo is played by simply humming into it. The humazoo adds a "buzzing" quality to the players voice by way of a vibrating membrane. The musician can produce varied tones on the instrument by using different syllables when blowing into it, such as doo, who, rrrrr or brrrr. 2" wide. Packaged individually on a blister card. Colors may vary. My Music Life Our eBay Store About Us Contact Us Reviews First Note Hum-A-Zoo Description A relative of the kazoo, our 1st Note™ Hum-az-oo is played by simply humming into it. The humazoo adds a "buzzing" quality to the players voice by way of a vibrating membrane. The musician can produce varied tones on the instrument by using different syllables when blowing into it, such as doo, who, rrrrr or brrrr. 2" wide. Packaged individually on a blister card. Colors may vary. Brand Grover Product Details Length 9.000 Width 5.000 Height 1.000 Weight 0.0625 UPC 082562991002