Mondrian Online Demo

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This online demo lets you try Mondrian without the need to download and install anything. You can type Mondrian code into the text area below, or upload a Mondrian file. After you click on Submit, you'll receive a MIDI file compiled from your input, or a diagnostic message if something went wrong.

The following files are available for inclusion in your code:

• fj.mon: Frère Jacques, from the tutorial
• scales.mon: macros defining some common scales
• gm.mon: macros for addressing General Midi instruments

Note for Safari/QuickTime users: QuickTime seems to get confused when it receives a MIDI file with an unexpected extension (.cgi instead of .mid). After clicking on Submit, you'll need to manually save the result as a file with a .mid extension before QuickTime will be able to make sense of it.