Styrofoam balls reacting to sound frequencies - GIF

Styrofoam balls reacting to sound frequencies.

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Previously:

https://www.homemadetools.net/forum/...374#post192625
https://www.homemadetools.net/forum/...266#post214885
https://www.homemadetools.net/forum/...093#post221343
https://www.homemadetools.net/forum/...808#post202205
https://www.homemadetools.net/forum/...803#post220433

Those balls become part of the accumulative then this happens to them
https://youtu.be/db_Twgw95nE

Upside-down bat goth party.

https://www.youtube.com/watch?v=G9A8PFlqM4U