Please answer the following question: Information: - A bell tower is a tower that contains one or more bells, or that is designed to hold bells, even if it has none. In the European tradition, such a tower most commonly serves as part of a church and contains church bells. Modern bell towers often contain carillons. - A pedalboard (also called a pedal keyboard, pedal clavier, or, with electronic instruments, a bass pedalboard) is a keyboard played with the feet that is usually used to produce the low-pitched bass line of a piece of music. A pedalboard has long, narrow lever-style keys laid out in the same semitone scalar pattern as a manual keyboard, with longer keys for C, D, E, F, G, A and B, and shorter, higher keys for C, D, F, G and A. Training in pedal technique is part of standard organ pedagogy in church music and art music. - A carillon - like instrument with fewer than 23 bells is called a chime . American chimes usually have one to one and a half diatonic octaves . Many chimes are automated . The first bell chime was created in 1487 . Before 1900 , chime bells typically lacked dynamic variation and the inner tuning ( the mathematical balance of a bell 's complex sound ) required to permit the use of harmony . Since then , chime bells produced in Belgium , the Netherlands , England , and America have inner tuning and can produce fully harmonized music . Some towers in England hung for full circle change ringing chime by an Ellacombe apparatus . - A carillon is a musical instrument that is typically housed in the bell tower (belfry) of a church or municipal building. The instrument consists of at least 23 cast bronze, cup-shaped bells, which are played serially to produce a melody, or sounded together to play a chord. A traditional manual carillon is played by striking a keyboard the stick-like keys of which are called batons with the fists, and by pressing the keys of a pedal keyboard with the feet. The keys mechanically activate levers and wires that connect to metal clappers that strike the inside of the bells, allowing the performer on the bells, or "carillonneur/carillonist" to vary the intensity of the note according to the force applied to the key. What is the relationship between 'chime ' and 'musical instrument'?
A:
subclass of