Each bell is differentiated by colour and sounds one note of the C scale. The bells are activated with a simple tap making play easy. Each different coloured metal bell is 8 cm high. The bells are numbered and can be lined up and played by one child or they can be used by a group of children working together. Each set of bells comes packaged in a beautifully designed gift box that includes an easy to play music sheet with 8 well known songs.