How to Use 1.Put the wider side of the kazoo in the mouth. 2.Sing a melody in your voice, just hum it loudly. 3.Dont need to blow, you cant make a sound when you blow. 4.The vibration of vocal cords drives the vibration of the sound film on the kazoo to make a sound. The playing of kazoo is related to the level of voice. Safe Material: Made of good quality aluminum, durable and safe to use. The edges of the kazoos are polished, very smooth. For Accompaniment: A good choice for guitar, ukulele, violin, piano keyboard and many other musical instruments. Portable: A mini musical instrument that you can put in you pockets or bags, and you can enjoy music anytime and anywhere. Gift: A perfect gift for the kids and who is music lover. Easy to play, kids also can learn to play it very quickly.