The Davetar by David, 4th grader at Meadowview Elementary School My instrument's name is the Davetar. The sound is produced by vibration. The instrument is made from PVC pipe, PVC pipe glue, fishing line, and rubber bands. The PVC pipe is for the frame. The PVC pipe glue is to glue the frame together. The fishing line is the strings. The rubber band is to tighten the strings.