http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
My spirit was in heaviness (Dominica Palmarum) : for 4 solo voices, chorus and chamber orchestra, BWV 21
Johann Sebastian Bach ; edited by = herausgegeben von Arnold Schering.
Introduction and libretto in German and English.