Lesson Progress
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Link to the tuning application Soundcorset
References and interesting links
More information about Heinrich Hertz
Comparative paper between A432 and A440
Some various informations about the pitch in Opera
Articles about VERDI and his 432
Lorsque le diapason de Verdi donnait le « la »
Giuseppe Verdi … 435Hz, 432Hz, 256Hz
Scientific pitch
Picture of the Turkey’s National Youth Philharmonic Orchestra
Painting of the French Opera by DEGAS Edgar (1834 – 1917)