an Entity references as follows:
Symphony n °39, KV 543 / Wolfgang Amadeus Mozart, comp.; SWF Symphony Orchestra; Michael Gielen, dir. / Wolfgang Amadeus Mozart, comp.; Wolfgang Hock, Willi Lehmann, vl... [et al.]; SWF Symphony Orchestra; Michael Gielen, dir. / Wolfgang Amadeus Mozart, comp.; Will Sanders, cor; SWF Symphony Orchestra; Michael Gielen, dir.