Kaomojis
🅰️4️⃣4️⃣0️⃣Hz
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#a440
#concert a
#standard pitch
#tuning
#hertz
#music standard
🎵🎯440Hz
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#tuning frequency
#a440
#standard pitch
#concert pitch
#instrument tuning
#hertz measurement
#a440 #concert a #standard pitch #tuning #hertz #music standard