Change ringing

Change ringing is the art of ringing a set of tuned bells in a controlled manner to produce variations in their sounding order.

Change ringing originated following the invention of English full-circle tower bell ringing in the early 17th century, when it was found that ringing a bell through a large arc of swing gave more control over the time between successive strikes of the clapper. This culminated in ringing bells through a full circle which allowed ringers to easily produce different striking sequences; either called out by one of the ringers, known as "Call changes", or continuously changing sequences following mathematical rules, known as "Method ringing".