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The article offers information on phonographs. It also provides an activity for students to make them understand elements related to producing sound. It is informed that phonograph was invented by scientist Thomas Edison. It is noted that Edison and his coworkers discovered that sound travels by waves produced by vibrations and these vibrations could be focused on a diaphragm.

The article presents a science experiment to help students understand the concept of powering jets of air by making two-reed flute to convey the relationship between sound and vibrations. It details the specific procedure of the science classroom project. It also provides a list of materials and other relevant topics for discussion. INSET: Learning Moments.