Tone Row Generator is a learning exercise developed in Macromedia Director. It helps compsers of 12-tone music quickly develop and audition many different 12-tone sequences, along with their related variations.

The opening screen is animated.

Initially, the application shows the notes to be used in choosing the tone row.

When the composer clicks the New Row button, the notes are rearranged at random to create a new row. Variations are created. The composer can click the Play button to the right of any of the variant rows to hear it.

Information about the application and its creation.
Click here to try the tool. Requires Adobe Shockwave.