Ralph Fischer (1972 – 2022) promovierte in Erziehungswissenschaften mit einem Thema zum Hausunterricht in der Bundesrepublik. Zahlreiche Veröffentlichungen zu Jacques Offenbach und zu Oper und Operette in Frankreich. Im Bonner Verlags-Comptoir erschienen: „Venedig in der Operette“ (2019) und „‘Homeschooling‘ in der Rheingasse. Bernhard Mäurers Erinnerungen an den jungen Beethoven“ (2020).
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