The chaconne is an old Spanish dance in moderate three-four measure, like the Passacaglia, which is slower. Both are used by classical composers as themes for variations. Research Chaconne
The passacaglia is an old Italian or Spanish dance tune, in slow three-four measure, with divisions on a ground bass, resembling a chaconne. Research Passacaglia
 
The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert