ATTENTION: For this AEIOU article, there is probably
Princess Maria Octavia Esterházy had lodgings on the first floor of this house and Haydn could not yet know how decisive this family would become for him later on. The libretto writer Pietro Metastasio lived in the same house and through him Haydn got to know Kapellmeister and choirmaster Nicola Antonio Porpora, from whom he got valuable tuition in singing, composition and Italian.
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