Improve your ear by learning to recognize pitches in the context of a key. Use the radio buttons to decide if you want to practice in a major or a minor key, whether you want to use notes only from the tonality you chose or from all twelve notes of the chromatic scale, and whether you want to hear the scale or a cadence in that key as a reference. Choose the range (in number of octaves) from which you would like the note selected. Click the "new example" button and the scale or cadence will be played, followed by a note selected at random subject to your restrictions. It is up to you to determine the note that was played. If you need to hear the randomly selected note again, click the "repeat note" button. You can check your answer by ear or you can have the answer displayed for you by clicking the "show answer" checkbox. The "fixed tonic C" checkbox lets you always work in C major or to have the tonic selected at random with each new example.