Using the Twilio API, enter your phone number onto our page, select the instrument you wish to hear, and press the call button. You'll receive a phone call via Twilio, which will record your the numbers you enter into the keypad for the first 15 seconds of the call.

Each keypad entry (0-9, #, *) corresponds to a different pitch.

Hang up when you finish composing and navigate to our song page which will play back your freshly rendered MIDI when you press the play button.

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