Rhythm Band Deluxe 8-Note Diatonic Resonator Bell Set Deluxe 8-Note Diatonic Resonator Bell Set This bell set is perfectly tuned by a unique electronic process developed by Rhythm Band's craftsmen which insures absolute perfect pitch throughout the entire range of the bells There is no plastic used in the construction of these bells The resonator chambers are constructed from the finest lightweight woods available and are specially selected for maximum acoustic properties This bell set is perfectly tuned by a unique electronic process developed by Rhythm Band's craftsmen which insures absolute perfect pitch throughout the entire range of the bells