Jordi Savall, performer, researcher, and promoter of early music, has become known for beautifully produced thematic collections organized around topics as diverse as the worlds of Miguel Cervantes, Christopher Columbus, and Caravaggio, performed by his ensembles Hespèrion XX (and XXI), and La Capella Reial de Catalunya, and recorded on his own label, Alia Vox. This immensely ambitious project, Jerusalem: City of the two peaces: Heavenly Peace and Earthly Peace, consists of two SACDs and a sumptuous book in eight languages, French, Spanish, English, Catalan, German, Italian, Arabic, and Hebrew, that includes a wide assortment of intriguing essays.