You can choose from three sets of images/sounds, including: classical music composers, musical instruments, and music notes on a scale. Every image has an associated sound (e.g. if the picture is a composer you hear a sample of their music, or if it is a musical instrument you hear the sound of this instrument).
The first part of the game is like the classical memory game in which you find pairs of matching cards. After you have matched all the pairs of cards you can go on to the second part of the game. In this game all images remain visible and you can hear the music/sound of one of the pictures. Then you must click as quick as possible on the correct picture.
The game is in Dutch, but the Help file includes instructions in English.