This experiment lets you explore the natural mathematical relationship between a string’s length and its pitch. Several strings are available to play, with each being divided into different lengths.

This tool lets you explore how the shape of a wave can change the sound it makes. You can choose from four different waveforms including square, sawtooth, triangle, and sine. When you click (or touch) from the top to the bottom of the screen, the wave will play from high to low.

This tool is a simulation of an old-time piano roll. You can play the music and see the notes scroll by. There are different songs to choose from and instruments to play.

This tool lets you play notes in a harmonic series, which is a set of frequencies with a simple relationship, such as twice as fast, three times as fast, four times, and so on. This can lead to an exploration of musical intervals, octaves, and major chords.

This experiment allows you to explore how frequency affects pitch. First you can use the recording provided, or you can use your mic to record yourself. Then using the controls at the bottom, or by clicking and rotating the sound waves, you can play the sound fast or slow, forward or backwards.

This tool is a simplified version of the Song Maker. You can click in the grid to add notes, change the tempo, and choose an option to add accompanying notes.

This experiment combines art and music. It was inspired by Wassily Kandinsky, an artist who compared painting to making music. Simply draw on the screen, and anything you draw (lines, circles, triangles, or scribbles) will be turned into sound. Use the controls at the bottom to switch to different instruments and sounds.

Lets you play arpeggios, which are chords played one note at a time. You can click on the wheel to choose different notes, and on the arrows to hear different patterns.

You can see how sound waves travel as vibrating air molecules. A grid of blue dots represent the air molecules, and when you click on the on-screen piano the dots will vibrate to show how the sound waves move. You can also click on the magnifying glass to track a single molecule for a more detailed visualization of different sounds waves for each note.

Allows you to explore and learn about chords.

Allows you to see a visual representation of a sound with a spectrogram, which shows the frequencies that make up the sound, from low to high, and how they change over time.

Create rhythms by clicking on the grid to add beats for several different percussion instruments.

Create your own song by clicking on the grid to add notes and percussion.

Create your own music with beatboxers.