Also titled Aria With Diverse Variations, this monumental opus for harpsichord was composed and published late in Bach's career. The composition represents a unique blend of complexity, beauty, and massive scope. In this setting, the aria and all 30 variations are presented in different combinations of instruments making it the perfect vehicle for featuring various chamber ensembles within the larger performing group. It is a singularly massive contribution to the list of serious repertoire for wind bands.