The Crand makes sound by when you pluck the rubber band with a stick. That causes the rubber band to vibrate and cause a sound.
The pitch changes when you pull a crayon. When you pull a crayon it tightens one of the rubber bands and when you pluck it, it produces a higher pitch.
The volume is louder when you pluck the rubber band harder. It is softer when you pluck the rubber band softly. The volume is also louder because I have a resonator, which makes the resonance echo, and makes it louder.
The higher notes a have clearer tone quality than the lower notes do. This is because the lower the notes, the looser the rubber band is. The causes the rubber band to be more out of control.
The materials I used to make the Crand were a tiebacks, a pop-tart box, scissors, 4 rubber bands, 5 crayons, paint, an awl, tape, and 2 lollipop sticks.
First, I cut the pop tart box so it only had 3 sides and no top. Then, I taped the pop-tart box so it only had 3 sides and no top. Then, I taped the part-tart box inside a corner of the tiebacks.
Next, I made hole for the rubber bands. After that, I painted the tiebacks and let the paint dry.
Then, I cut the rubber bands and tied one end inside the box and tied the other end outside the box to a crayon.
Sixth, I made holes in the top of the tiebacks so I would be able to pluck the rubber bands with the top on. I put the top on the box.
Lastly, I named my instrument Crand . I named it Crand because it's a mix of the words crayon and rubber band.