This exercise is one of the exercises you can use to practise intervals. The concept is pretty simple: You press the New interval button to play a random interval, and then you should tell what interval it was.
Minor second: | Perfect fourth: | Major sixth: | Minor ninth: |
Major second: | Diminished fifth: | Minor seventh: | Major ninth: |
Minor third: | Perfect fifth: | Major seventh: | Minor decim: |
Major third: | Minor sixth: | Perfect octave: | Major decim: |