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WikiPedia: Jhan_Gero http://www.oxfordmusiconline.com/public/book/omo_g... https://viaf.org/viaf/14965219 https://www.wikidata.org/wiki/Q1657883#identifiers https://catalogue.bnf.fr/ark:/12148/cb13961640h https://data.bnf.fr/ark:/12148/cb13961640h https://d-nb.info/gnd/134384032 https://isni.org/isni/0000000118560442 https://id.loc.gov/authorities/names/n84183255 https://musicbrainz.org/artist/ff0351fa-eb71-443e-... https://nla.gov.au/anbd.aut-an35045166