The Uber Shmit belongs to the Percussion family.
I made my instrument out of fishing line, baby food jars, wood and water.
The sound is produced by hitting the jars with a thin metal skewer, which causes the metal skewer to vibrate up against the jars, which produces the sound
The pitch is controlled by hitting the jars with the skewer and how hard or soft you hit the jar
The dynamics are controlled by using less or more energy in to hitting the jar with the metal skewer. The more energy you use the louder the sound, the less energy used the softer the sound.