Harmonic Tuner mobile app shows: Xavier d Maistre & @lesartsflo recorded their #Krumpholtz album for @harmoniamundi on a special tuning pitch of 430Hz.
The image shows the Spectrum Tuner app for Android analyzing the recording of Jean-Baptiste #Krumpholtz‘s Concerto for Harp and Orchestra in B-Flat Major, a work of the 18th century.
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