The Engines of Our Ingenuity 1305: A = 440
Engines of Our Ingenuity - En podcast av Houston Public Media
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Episode: 1305 Setting concert pitch -- the elusive 440 A. Today, we set the pitch of a concert A.
Engines of Our Ingenuity - En podcast av Houston Public Media
Episode: 1305 Setting concert pitch -- the elusive 440 A. Today, we set the pitch of a concert A.