The Google Doodle today (at least here in the US) is about the 105th birthday of Clara Rockmore.
Clara Rockmore was the first virtuoso performer on Leo Theremin's "aetherphone", now known as the "Theremin".
The doodle includes an entertaining "training" animation, and then an animation of a performance by Ms. Rockmore.
Obligatory Electronic content: It is claimed that Theremin accidentally discovered the phenomenon of producing audible hetrodyne signals which could be used as a musical instrument. Others claim there was a prior US patent covering the principle.
Theremin was reputed to have designed the famous passive "bug" installed in the US Ambassador's residence in Moscow.
And it was a variant of the Theremin used in the famous song "Good Vibrations" by the Beach Boys.
https://en.wikipedia.org/wiki/Theremin