A short video explaining that music is a sound produced by oscillations of pressure through a solid, liquid, and gas with a frequency within range of hearing. [1:30]

Shock and James play "True or Not True" using words that contain the letters "ue" to demonstrate the sound made by that letter combination. The goal of this resource is reading, sight-reading, spelling, and decoding.

Ever wonder why the heart sounds the way that it does? Opening and closing of heart valves makes the heart rhythm come alive with its lub dub beats. Rishi is a pediatric infectious disease physician and works at Khan Academy. [9:50]

Learn about the piano by watching many videos of piano player Alan Gampel. He provides insights and performances of several piano pieces. There are several interactive quizzes along the way to enhance your learning.

This video segment presents a variety of sounds -- from animals to machines to musical instruments -- while introducing the basic concepts of vibration, volume, and pitch. [2:36]

This YouTube video presents each letter of the alphabet in a chant, along with the sound it makes, and an object that begins with that letter.

In this video, students perform dramatizations of the life cycles of a butterfly and then a frog to music and sound effects by classmates. [2:52]