Grandsire is a traditional method of change ringing, a form of ringing church bells in a sequence of changes. It originated in England and is known for its simplicity and accessibility, making it popular among novice ringers. The method consists of a series of calls that create a pattern, allowing ringers to practice their skills while producing harmonious sounds. The structure of Grandsire involves a specific number of bells, typically ranging from five to twelve. Each bell follows a set pattern, with the lead bell ringing first, followed by the others in a coordinated sequence. This method is often used in bell towers across the UK and is an essential part of the ringing community.